I am developing a project using VB2008 and Crystal Reports 11.5.
I have added new crystal report to the project and it is working fine with the folowing code.
Dim ds As New DataSet
mysqlDataAdapter1 = New MySqlDataAdapter("SELECT * from client_reg where c_qid='" & TextBox2.Text & "'", SQLConnection)
mysqlDataAdapter1.Fill(ds, "client_reg")
ds.WriteXml(CurDir() + "\work_order.xml", XmlWriteMode.WriteSchema)
Dim cryRpt As New work_order '// this is my rpt file in project
rpt_view.CrystalReportViewer1.ReportSource = cryRpt '// rpt_view is the form with empty report viewer
rpt_view.CrystalReportViewer1.Refresh()
rpt_view.CrystalReportViewer1.RefreshReport()
rpt_view.Show()
Now I want to change the XML file location dynamically as follows;
ds.WriteXml("C:\new\bin\work_order.xml", XmlWriteMode.WriteSchema)
How can I change the RPT datasource to new path???
Thank you,
Sameera
Try Something like :
Create Property called:
Public Property ds() As DataSet
Get
Return ViewState("ds")
End Get
Set(ByVal value As DataSet)
ViewState("ds") = value
End Set
End Property
Then set report datasource to be the dataset
Public Sub BindReport(ByVal Id As String)
ds.WriteXml("C:\new\bin\work_order.xml", XmlWriteMode.WriteSchema)
cryRpt.SetDataSource(ds)
rpt_view.ReportSource = cryRpt
If rblFormat.SelectedValue = 1 Then
cryRpt.ExportToHttpResponse(ExportFormatType.PortableDocFormat, Response, True, "ExportedReport")
Else
cryRpt.ExportToHttpResponse(ExportFormatType.WordForWindows, Response, True, "ExportedReport")
End If
Call This method at the button event
Related
I have the following requirement,
I have a ComboBox Control (DropDownList Style) which user has to select a given value, but can not edit. Then I save it to a Database Table, and it's working fine.
(dataRow("it_discount_profile") = Trim(cmbDisProfile.Text))
But when I try to show the same Data in the same ComboBox by retrieving it from the Database, it won't show.
(cmbDisProfile.Text = Trim(tempTb.Rows(0).Item("it_discount_profile")))
When I change the ComboBox to "DropDown Style", it works. But then the User can edit it.
Am I missing something here or is it like that? Any advice will be highly appreciated.
Im filling it in runtime using a procedure.
Private Sub filldisProfiles()
Dim sqlString As String = "SELECT discount_profile FROM tb_discount_profiles"
Dim tempTb As DataTable
Dim myTbClass As myClassTableActivities = New myClassTableActivities()
tempTb = myTbClass.myFunctionFetchTbData(sqlString)
cmbDisProfile.DataSource = tempTb
cmbDisProfile.DisplayMember = "discount_profile"
End Sub
Ok. Actually, Im trying to migrate one of my old project from VB to VB.Net. VB.Net is little new to me. Im using a self built classto reduce codes in other places. Im attaching the class below.
My actual requirement is to populate the combo box from a table. I like to do it in run time. I don't want users to edit it. If they want to add a new value, they have separate place (Form) for that. I think im doing it in a wrong way. If possible please give a sample code since I'm not familiar with the proposed method.
Public Function myFunctionFetchTbData(ByVal inputSqlString As String) As DataTable
Try
Dim SqlCmd As New SqlCommand(inputSqlString, conn)
Dim dataAdapter As New SqlDataAdapter(SqlCmd)
Dim fetchedDataSet As New DataSet
fetchedDataSet.Clear()
dataAdapter.Fill(fetchedDataSet)
Dim fetchedDataTable As DataTable = fetchedDataSet.Tables(0)
Return fetchedDataTable
Catch ex As Exception
MsgBox(Err.Description)
End Try
End Function
' this sub will update a table
Public Sub MyMethodUpdateTable(ByVal sqlString As String, ByVal tbToUpdate As DataTable)
Dim SqlCmd As New SqlCommand(sqlString, conn)
Dim dataAdapter As New SqlDataAdapter(SqlCmd)
Dim objCommandBuilder As New SqlClient.SqlCommandBuilder(dataAdapter)
dataAdapter.Update(tbToUpdate)
End Sub
Public Function MyMethodfindRecord(ByVal strSearckKey As String, ByVal tableName As String, ByVal strColumnName As String) As Boolean
Try
Dim searchSql As String = "SELECT * FROM " & tableName & " WHERE " & strColumnName & "='" & strSearckKey & "'"
'Dim searchString As String = txtCategoryCode.Text
' searchOwnerCmd.Parameters.Clear()
' searchOwnerCmd.Parameters.AddWithValue("a", "%" & search & "%")
Dim tempTb As DataTable
Dim myTbClass As myClassTableActivities = New myClassTableActivities()
tempTb = myTbClass.myFunctionFetchTbData(searchSql)
If tempTb.Rows.Count = 0 Then
Return False
Else
Return True
End If
Catch ex As Exception
MsgBox(Err.Description)
End Try
End Function
Public Function myFunctionFetchSearchTB(ByVal inputSqlString As String) As DataTable
Try
Dim SqlCmd As New SqlCommand(inputSqlString, conn)
Dim dataAdapter As New SqlDataAdapter(SqlCmd)
Dim fetchedDataSet As New DataSet
fetchedDataSet.Clear()
dataAdapter.Fill(fetchedDataSet)
Dim fetchedSearchTB As DataTable = fetchedDataSet.Tables(0)
Return fetchedSearchTB
Catch ex As Exception
MsgBox(Err.Description)
End Try
End Function
OK. If I understood correctly, you have a problem in retrieving Data [String] from a Database Table into a ComboBox of DropDownStyle [DropDownList].
How do you fill/populate your ComboBox with Data From Database Table ?
In this link, Microsoft docs state, that:
Use the SelectedIndex property to programmatically determine the index
of the item selected by the user from the DropDownList control. The
index can then be used to retrieve the selected item from the Items
collection of the control.
In much more plain English
You can never SET ComboBox.Text Value while in DropDownList by code, which you already knew by testing your code, but you need to use DisplayMember and ValueMember or SelectedIndex.
ComboBox1.SelectedIndex = ComboBox1.FindStringExact(Trim(tempTb.Rows(0).Item("it_discount_profile")))
Please consider populating your ComboBox Control from Database Table using (Key,Value) Dictionary collection, here is an example
Thank you guys for all the advice's. The only way it can be done is the way u said. I thought of putting the working code and some points for the benefit of all.
proposed,
ComboBox1.SelectedIndex = comboBox1.FindStringExact(Trim(tempTb.Rows(0).Item("it_discount_profile")))"
does not work when u bind the datatable to the combobox. The values should be added to the combo box in run time if the above "SelectedIndex" method to work. The code to add items to the combobox is as follows(myClassTableActivities is a class defined by myself and its shown above),
Private Sub filldisProfiles()
Dim sqlString As String = "SELECT discount_profile FROM tb_discount_profiles"
Dim tempTb As DataTable
Dim myTbClass As myClassTableActivities = New myClassTableActivities()
tempTb = myTbClass.myFunctionFetchTbData(sqlString)
Dim i As Integer = 0
For i = 0 To tempTb.Rows.Count - 1
cmbDisProfile.Items.Add(Trim(tempTb.Rows(i).Item("discount_profile")))
Next
End Sub
After adding we can use the following code to display the data on combobox (DropDownList).
Private Sub txtItCode_TextChanged(sender As Object, e As EventArgs) Handles txtItCode.TextChanged
Try
Dim sqlString As String = "SELECT * FROM tb_items where it_code='" & Trim(txtItCode.Text) & "'"
Dim tempTb As DataTable
Dim myTbClass As myClassTableActivities = New myClassTableActivities()
tempTb = myTbClass.myFunctionFetchTbData(sqlString)
If Len(txtItCode.Text) < 4 Then
cmdAdd.Enabled = False
cmdDelete.Enabled = False
cmdSave.Enabled = False
Else
If tempTb.Rows.Count > 0 Then
With tempTb
txtItName.Text = Trim(tempTb.Rows(0).Item("it_name"))
cmbDisProfile.SelectedIndex = cmbDisProfile.FindStringExact(Trim(tempTb.Rows(0).Item("it_discount_profile")))
cmbProfitProfile.SelectedIndex = cmbProfitProfile.FindStringExact(Trim(tempTb.Rows(0).Item("it_profit_profile")))
cmbItCategory.SelectedIndex = cmbItCategory.FindStringExact(Trim(tempTb.Rows(0).Item("it_category")))
cmbFinanCategory.SelectedIndex = cmbFinanCategory.FindStringExact((tempTb.Rows(0).Item("it_finance_category")))
End With
cmdAdd.Enabled = False
cmdDelete.Enabled = True
cmdSave.Enabled = True
Else
cmdAdd.Enabled = True
cmdDelete.Enabled = False
cmdSave.Enabled = False
txtItName.Text = ""
Call fillItCategories()
Call fillProProfile()
Call filldisProfiles()
Call fillFinCat()
End If
End If
Catch ex As Exception
MsgBox(ex.Message)
End Try
my code is to read the image file path in every row and display it in the datagridview "Image" Column.
.....
what's the problem with my code? please help me fix this.
UPDATE
this is the updated code but it displays nothing.
Dim dbdataset As New DataTable
Try
con.Open()
query = "Select * FROM [svfmemberlist]"
cmd = New OleDbCommand(query, con)
da.SelectCommand = cmd
da.Fill(dbdataset)
dgvSearch.RowTemplate.Height = 150
source.DataSource = dbdataset
dgvSearch.DataSource = source
Dim img As New DataGridViewImageColumn()
dgvSearch.Columns.Add(img)
img.HeaderText = "Image"
img.Name = "img"
img.ImageLayout = DataGridViewImageCellLayout.Zoom
dgvSearch.Columns("img").DataGridView.AutoGenerateColumns = False
dgvSearch.Columns("Name").AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill
dgvSearch.Columns("img").Width = 150
For Each row As DataGridViewRow In dgvSearch.Rows
If Not row.Cells("imgPath").FormattedValue.ToString = Nothing Then
Dim str As String = row.Cells("imgPath").FormattedValue.ToString
Dim inImg As Image = Image.FromFile(str)
row.Cells("img").Value = inImg
Else
img.Image = Nothing
End If
Next
con.Close()
Catch ex As Exception
MessageBox.Show(ex.Message)
End Try
The following example does not match how you are loading data and images but with a little effort will work within your current code.
I created two columns in the DataGridView via the IDE, one Text and one Image DataGridViewColumn.
The first line in form load sets ImageLayout, second line of code sets alignment to top-left for appearances. Next I set auto-size mode for all columns followed by setting the row height for each row.
Next (these lines are to load images from a folder one level below the app folder).
Setup the path to the images.
Add images using FileImageBytes function (which I would place into a separate class or code module but works just fine in your form).
Yes everything is hard-wired so it's easy to see how everything works.
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
CType(DataGridView1.Columns("PictureColumn"), DataGridViewImageColumn).ImageLayout = DataGridViewImageCellLayout.Normal
DataGridView1.Columns.Cast(Of DataGridViewColumn).Select(Function(col) col).ToList _
.ForEach(Sub(col) col.CellTemplate.Style.Alignment = DataGridViewContentAlignment.TopLeft)
DataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells
DataGridView1.RowTemplate.Height = 222
Dim imagePath As String = IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Images")
DataGridView1.Rows.Add(New Object() {"Car1", FileImageBytes(IO.Path.Combine(imagePath, "Car1.bmp"))})
DataGridView1.Rows.Add(New Object() {"Car2", FileImageBytes(IO.Path.Combine(imagePath, "Car2.jpg"))})
End Sub
Public Function FileImageBytes(ByVal FileName As String) As Byte()
Dim fileStream As IO.FileStream = New IO.FileStream(FileName, IO.FileMode.Open, IO.FileAccess.Read, IO.FileShare.Read)
Dim byteArray(CInt(fileStream.Length - 1)) As Byte
fileStream.Read(byteArray, 0, CInt(fileStream.Length))
Return byteArray
End Function
End Class
I have one combobox in my app that gets populated with a dozen or so items from SQL SERVER. I am currently trying to allow user to be able to type in a new value into the combobox and save it to a table in SQL SERVER. I'm looking for something along the lines of a DropDownStyle of DropDown and DropDownList. Basically I'm hoping to let the user type in the combobox, however if the value is not there, i want to be able to give them an option of saving it (probably on lost focus). I'm wondering what would be a good way of doing something like that.
On lost focus should I basically go through each item that is currently in the drop down and check it against the value entered?
EDIT:
Sql="SELECT IDvalue, TextName from TblReference"
Dim objconn As New SqlConnection
objconn = New SqlConnection(conn)
objconn.Open()
Dim da As New SqlDataAdapter(sql, objconn)
Dim ds As New DataSet
da.Fill(ds, "Name")
If ds.Tables("Name").Rows.Count > 0 Then
Dim dr As DataRow = ds.Tables("Name ").NewRow
ds.Tables("Name").Rows.InsertAt(dr, 0)
With c
.DataSource = ds.Tables("Name")
.ValueMember = " IDvalue "
.DisplayMember = " TextName "
End With
End If
You are already adding a fake/blank row to a table, you can do the same thing for a new item.
' form level datatable var
Private cboeDT As DataTable
Initializing:
cboeDT = New DataTable
Dim sql = "SELECT Id, Descr FROM TABLENAME ORDER BY Descr"
Using dbcon As New MySqlConnection(MySQLConnStr)
Using cmd As New MySqlCommand(sql, dbcon)
dbcon.Open()
cboeDT.Load(cmd.ExecuteReader())
' probably always need this even
' when there are no table rows (???)
Dim dr = cboeDT.NewRow
dr("Id") = -1 ' need a way to identify it
dr("Descr") = ""
cboeDT.Rows.InsertAt(dr, 0)
End Using
End Using
cboeDT.DefaultView.Sort = "Descr ASC"
cboE.DataSource = cboeDT
cboE.DisplayMember = "Descr"
cboE.ValueMember = "Id"
Note Users tend to have a preference as to the order of these things. The simple creatures tend to prefer alphabetical over a DB Id they may never see. To accommodate them, the DefaultView is sorted so that any new rows added will display in the correct order.
Add new items in the Leave event (much like Steve's):
Private Sub cboE_Leave(sender ...
' if it is new, there will be no value
If cboE.SelectedValue Is Nothing Then
' alternatively, search for the text:
'Dim item = cboeDT.AsEnumerable().
' FirstOrDefault(Function(q) String.Compare(q.Field(Of String)("Descr"),
' cboE.Text, True) = 0)
'If item Is Nothing Then
' ' its new...
Dim newid = AddNewItem(cboE.Text)
Dim dr = cboeDT.NewRow
dr("Id") = newid
dr("Descr") = cboE.Text
cboeDT.Rows.Add(dr)
' fiddling with the DS looses the selection,
' put it back
cboE.SelectedValue = newid
End If
End Sub
If you want to search by text:
Dim item = cboeDT.AsEnumerable().
FirstOrDefault(Function(q) String.Compare(q.Field(Of String)("Descr"),
cboE.Text, True) = 0)
If item Is Nothing Then
' its new...
...
Inserting will vary a little depending on the actual db. A key step though is to capture and return the ID of the new item since it is needed for the CBO:
Private Function AddNewItem(newItem As String) As Int32
Dim sql = "INSERT INTO MY_TABLE (Descr) VALUES (#v); SELECT LAST_INSERT_ID();"
Dim newId = -1
Using dbcon As New MySqlConnection(MySQLConnStr)
Using cmd As New MySqlCommand(sql, dbcon)
dbcon.Open()
cmd.Parameters.Add("#v", MySqlDbType.String).Value = newItem
' MySql provides it in the command object
If cmd.ExecuteNonQuery() = 1 Then
newId = Convert.ToInt32(cmd.LastInsertedId)
End If
End Using
End Using
Return newId
End Function
As noted MySql provides the LastInsertedID as a command object property. In SQL SERVER, tack ...";SELECT LAST_INSERT_ID();" to the end of your SQL and then:
newId = Convert.ToInt32(cmd.ExecuteScalar())
This is not conceptually very different from Steve's answer, except it uses the DataTable you build rather than collections which makes it (very) slightly simpler.
The way I do this, is on window load I perform a new SQL query to get the list of values in the table, and load them into a combobox.
Then once focus is lost, it then checks what's currently typed into the combobox against the current values already loaded. If it doesn't exist, then it's not in SQL. Something like the following...
Dim found As Boolean = False
For i As Integer = 0 To comboBox.Items.Count - 1
Dim value As String = comboBox.Items(i).ToString()
If comboBox.Text = value Then
found = True
End If
Next
If found = False Then
'the item doesn't exist.. add it to SQL
Else
'the item exists.. no need to touch SQL
End If
First thing I would do is to build a simple class to hold your values through a List of this class
Public Class DataItem
Public Property IDValue As Integer
Public Property TextName as String
End Class
Now, instead of building an SqlDataAdapter and fill a dataset, work with an SqlDataReader and build a List(Of DataItem)
' Class global...
Dim allItems = new List(Of DataItem)()
Sql="SELECT IDvalue, TextName from TblReference"
' Using to avoid leaks on disposable objects
Using objconn As New SqlConnection(conn)
Using cmd As New SqlCommand(Sql, objconn)
objconn.Open()
Using reader = cmd.ExecuteReader()
While reader.Read()
Dim item = new DataItem() With { .IDValue = reader.GetInt32(0), .TextName = reader.GetString(1)}
allItems.Add(item)
End While
End Using
if allItems.Count > 0 Then
allItems.Insert(0, new DataItem() With {.IDValue = -1, .TextValue = ""}
Dim bs = new BindingList(Of DataItem)(allItems)
c.DataSource = bs
c.ValueMember = "IDvalue"
c.DisplayMember = "TextName"
End If
End Using
End Using
Now the code that you want to add to your Leave event for the combobox
Sub c_Leave(sender As Object, e As EventArgs) Handles c.Leave
If Not String.IsNullOrEmpty(c.Text) Then
Dim bs = DirectCast(c.DataSource, BindingList(Of DataItem))
if bs.FirstOrDefault(Function(x) x.TextName = c.Text) Is Nothing Then
Dim item = new DataItem() With { .IDValue = -1, .TextName = c.Text}
bs.Add(item)
' here add the code to insert in the database
End If
End If
End Sub
As the question title suggests, my vb.net project that uses Crystal Reports 9 and a password restricted MS-Access 97 database.
When loading reports, the Load method calls cReport.VerifyDatabase() which has previously been working fine without a password, but since adding one, it isn't working, and gives me the following error
Log on failed.
at CrystalDecisions.CrystalReports.Engine.ReportDocument.VerifyDatabase()
What do I need to add/change to this code for it to log on successfully?
Private Sub frmReportViewer_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Try
setFormSizes(Me, con)
Me.Location = New Point((Screen.PrimaryScreen.WorkingArea.Width / 2) - (Me.Width / 2), 10)
Me.Text = "Report Viewer - (" & Replace(cReport.FileName, "rassdk://", "") & ")"
cReport.VerifyDatabase()
cReport.Refresh()
crViewer.ReportSource = cReport
crViewer.ToolPanelView = CrystalDecisions.Windows.Forms.ToolPanelViewType.None
crViewer.Zoom(87)
Catch ex As Exception
errorLog(ex)
End Try
End Sub
EDIT
The data can be viewed when opening the report file in Crystal Reports itself, but this is because I can manually enter the password.
According to this documentation : 1.4.4.1.2
Use this method to log database with your report before verify the database :
Private Function SubreportLogon_RD(ByVal TestReport As ReportDocument) As ReportDocument
Dim dataSourceConnections As DataSourceConnections = TestReport.DataSourceConnections
Dim connectInfo As IConnectionInfo = dataSourceConnections(0)
connectInfo.SetConnection("ServerName", "DatabaseName", "UserName", "Password")
Dim TestSubreport As ReportDocument = TestReport.Subreports("Subreport1")
Dim subreportDataSourceConnections As DataSourceConnections = TestSubreport.DataSourceConnections
Dim connectInfo As IConnectionInfo = subreportDataSourceConnections(0)
connectInfo.SetLogon("UserName", "Password")
End Function
As per MSDN
Dim logOnInfo As New TableLogOnInfo()
Dim i As Integer
For i = 0 To cReport.Database.Tables.Count - 1
logOnInfo.ConnectionInfo.DatabaseName = "Database_Name"
logOnInfo.ConnectionInfo.Password = "Password"
cReport.Database.Tables.Item(i).ApplyLogOnInfo(logOnInfo)
Next i
I want to search clients that got to shop between two dates.
The code I use seems alright and it doesn't return any error but the CR returns everything - It does not use the date search function. The CR I use is tested with a simple program that open CR and works fine.
database is ms access and code is in visual studio 2005
The second issue I have is that despite i use the connection info part it still ask me for a code
PS. sorry for my bad formatting , i am new in stackoverflow and i find it hard to make a post
thank you!
-Agisilaos
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Public Class Form1
Dim crConnectionInfo As New ConnectionInfo()
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
Dim cryRpt As New ReportDocument
cryRpt = New CrystalDecisions.CrystalReports.Engine.ReportDocument
cryRpt.Load("C:\Users\agis\Documents\Visual Studio 2005\Projects\new_contracts _of_month\new_contracts _of_month\CrystalReport2.rpt", CrystalDecisions.Shared.OpenReportMethod.OpenReportByTempCopy)
With crConnectionInfo
.ServerName = "C:\Users\agis\Desktop\Insurance database\Insurancemanager.mdb"
.UserID = "Admin"
.Password = "kos"
.DatabaseName = "insurancemanager"
End With
'first parameter
Dim crParameterFieldDefinitions As ParameterFieldDefinitions
Dim crParameterFieldDefinition As ParameterFieldDefinition
Dim crParameterValues As New ParameterValues
Dim crParameterDiscreteValue As New ParameterDiscreteValue
crParameterDiscreteValue.Value = Convert.ToDateTime(TextBox1.Text)
crParameterFieldDefinitions = cryRpt.DataDefinition.ParameterFields
crParameterFieldDefinition = crParameterFieldDefinitions.Item("startdate")
crParameterValues = crParameterFieldDefinition.CurrentValues
crParameterValues.Add(crParameterDiscreteValue)
crParameterValues.Clear()
' second parameter :
Dim crParameterFieldDefinitions2 As ParameterFieldDefinitions
Dim crParameterFieldDefinition2 As ParameterFieldDefinition
Dim crParameterValues2 As New ParameterValues
Dim crParameterDiscreteValue2 As New ParameterDiscreteValue
crParameterDiscreteValue2.Value = Convert.ToDateTime(TextBox2.Text)
TextBox3.Text += " " + crParameterDiscreteValue2.Value
crParameterFieldDefinitions2 = cryRpt.DataDefinition.ParameterFields
crParameterFieldDefinition2 = crParameterFieldDefinitions2.Item("enddate")
crParameterValues2 = crParameterFieldDefinition2.CurrentValues
crParameterValues2.Clear()
crParameterValues2.Add(crParameterDiscreteValue2)
crParameterFieldDefinition.ApplyCurrentValues(crParameterValues)
crParameterFieldDefinition2.ApplyCurrentValues(crParameterValues2)
CrystalReportViewer1.ReportSource = cryRpt
CrystalReportViewer1.Refresh()
End Sub
End Class
Don’t understand what exactly your problem is but I assume that you want to pass parameter to report and filter report data on those parameters also want to set run-time connection settings of crystal report.
First create parameter field in your report (right click on parameter fields and click on add in crystal designer)
Now go to “crystal report->report->select expert” menu in visual studio crystal report designer and set data filter condition using these parameter fields.
For passing parameter to report use parameter name and value like this
cryRpt.ParameterFields("parametername").CurrentValues.AddValue(objVal)
cryRpt.ParameterFields("fromdatetime").CurrentValues.AddValue(Now)
you don’t have to set any server name for ms access database better way is create dsn for your database file and use that dsn in your report so your report will never ask for database file unless data file is missing you can even create dsn programmatically at run time if want that let us know
if you wat to set sql like server database password and login at runtime use
repDoc.DataSourceConnections(0).SetLogon("usrID","psw")
repDoc.DataSourceConnections(0).IntegratedSecurity = False