I'm using VB.Net and I have a database contains two tables "Personne" and "PersonneCopy" ( Same schema as Personne [4 columns = N°, FirstName, LastName, B_Day])
I load the first table in a Datagridview all it's fine with that, here's the code:
Dim Connection As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source= .\BD.mdb")
Dim SqlRequete As String = "Select * From Personne"
Dim Adapter As New OleDbDataAdapter(SqlRequete, Connection)
Dim DataSet As New DataSet
Adapter.Fill(DataSet, "Tb1")
Dim DataTable As New DataTable
DataTable = DataSet.Tables("Tb1")
DataGridView1.DataSource = DataTable
Is there any way to add the full row that was selected from DataGridView1 to the table "PersonneCopy"?
And by the way I tried this code with an other Datagridview to get the index of the row selected and it works.
Dim Index As Integer = DataGridView1.Item(0, DataGridView1.CurrentRow.Index).Value
Dim SqlRequete As String = "Select * From Personne where N°=" & Index.ToString
Dim Adapter As New OleDbDataAdapter(SqlRequete, Connection)
Dim Ds As New DataSet
Adapter.Fill(Ds, "Tb")
DataGridView2.DataSource = Ds.Tables(0)
Try like this
Dim drCopy as DataRow
Dim tbCopy as Datatable
tbCopy = .... 'PersonneCopy table
drCopy=tbCopy.NewRow()
For i as integer=0 to drCopy.columns.count-1
drCopy(i)=Ds.Tables(0).rows(0).items(i) '---------> or you can change rows(0)
Next
tbCopy.Rows.Add(drCopy)
Related
i have a listbox that users can add Countries Names into it anytime.
now i need to only add new data to check if the data is new then insert it to sql.
my code not work:
For Each i As String In listbox1.Items
Dim sql = "select * From Countries where CountryName=N'" & i & "'"
Dim adp As New SqlClient.SqlDataAdapter(sql, SQlconn)
Dim ds As New DataSet
adp.Fill(ds)
Dim dt = ds.Tables(0)
If dt.Rows.Count = 0 Then
Dim dr = dt.NewRow
dr!CountryName = i
dt.Rows.Add(dr)
Dim cmd As New SqlClient.SqlCommandBuilder(adp)
adp.Update(dt)
End If
Next
If you're loading the existing names from the database in the first place then there's no need for you to check anything. Simply query the database to populate a DataTable and bind that to the ListBox. When the user adds a new country, add it to the DataTable and it will automatically show up in the ListBox. When it's time to save, just use the same data adapter to save the DataTable and only the new records will be saved.
i using this code to search by textbox to get the related data for the ID
Dim connetionString As String
Dim cnn As SqlConnection
connetionString="DataSource=IP;InitialCatalog=DB;UserID=sa;Password=password"
cnn = New SqlConnection(connetionString)
Dim com As String = "SELECT * FROM Table WHERE ID= '" & TextBox1.Text & "'"
Dim Adpt As New SqlDataAdapter(com, cnn)
Dim ds As New DataSet()
Adpt.Fill(ds, "Table")
DataGridView1.DataSource = ds.Tables(0)
What iam trying to do, i need to do the same code but with datagridview column1
Explaining:
i've already add button to upload data to datagridview the data include ID's
i need to search by those ID's in bulk, that included to the datagridview then post the income data to another datagridview,
Thanks in advance.
First, I think you should correct your existing code to use SQL Parameters.
Dim com As New SqlCommand("SELECT * FROM Table WHERE ID= #Id;", cnn)
com.Parameters.Add("#Id", SqlDbType.VarChar).Value = TextBox1.Text
Dim Adpt As New SqlDataAdapter(com)
Now to use the value in the first row, first column
Dim strId As String = DataGridView1.Rows(0).Cells(0).Value.ToString
Dim com2 As New SqlCommand("SELECT * FROM Table WHERE ID= #Id;", cnn)
com2.Parameters.Add("#Id", SqlDbType.VarChar).Value = strId
Dim Adpt2 As New SqlDataAdapter(com2)
I had to guess at the datatype. Please check your database to get the correct type. I guessed it was some type of string since you had it enclosed in single quotes.
I have a datagridview and it looks like this
Datagridview Column
My question is how can I make all columns as checkbox column except the month column?
Here is my code so far
Dim con1 As MySqlConnection = New MySqlConnection("server=192.168.2.87;userid=root;password=admin1950;database=inventory")
Dim sql1 As MySqlCommand = New MySqlCommand("Select * from period_closure", con1)
Dim ds1 As DataSet = New DataSet
Dim adapter1 As MySqlDataAdapter = New MySqlDataAdapter
con1.Open()
adapter1.SelectCommand = sql1
adapter1.Fill(ds1, "MyTable")
DataGridView1.DataSource = ds1.Tables(0)
con1.Close()
Me.DataGridView1.Columns(0).Frozen = True
Dim i As Integer
For i = 0 To DataGridView1.Columns.Count - 1
DataGridView1.Columns.Item(i).SortMode = DataGridViewColumnSortMode.Programmatic
Next i
I tried this code
For Each row in DatagridviewRow in Datagridview1.rows + 1
'+1 so the column month will not be affected
dim check as checkboxcolumn
row = checkboxcolumn
next
Its not working
TYSM for help
Add this line after the DataSet has been filled with columns but before binding the data to the DataSet
dtSet.Tables(0).Columns(0).DataType = GetType(Boolean)
I have a DataTable that is built like this:
Dim dt As New DataTable()
dt = SqlHelper.ExecuteDataset(connString, "storedProcedure", Session("Member"), DBNull.Value, DBNull.Value).Tables(0)
Then it is converted to a DataView and exported to Excel like this:
Dim dv As New DataView()
dv = dt.DefaultView
Export.CreateExcelFile(dv, strFileName)
I want to add another column and fill it with data before I export to Excel. Here's what I'm doing now to add the column:
Dim dc As New DataColumn("New Column", Type.GetType("System.String"))
dc.DefaultValue = "N"
dt.Columns.Add(dc)
Then to populate it:
For Each row As DataRow In dt.Rows
Dim uID As Integer = Convert.ToInt32(dt.Columns(0).ColumnName)
Dim pID As String = dt.Columns(0).ColumnName
Dim qry As String = "SELECT * FROM [MyTable] WHERE [UserID] = " & uID & " AND [PassID] = '" & pID & "'"
Dim myCommand As SqlCommand
Dim myConn As SqlConnection = New SqlConnection(ConfigurationSettings.AppSettings("connString"))
myConn.Open()
myCommand = New SqlCommand(qry, myConn)
Dim reader As SqlDataReader = myCommand.ExecuteReader()
If reader.Read() Then
row.Item("New Column") = "Y"
Else
row.Item("New Column") = "N"
End If
Next row
But I get a "System.FormatException: Input string was not in a correct format." error when I run the app. It doesn't seem to like these lines:
Dim uID As Integer = Convert.ToInt32(dt.Columns(0).ColumnName)
Dim pID As String = dt.Columns(0).ColumnName
I think I have more than one issue here because even if I comment out the loop that fills the data in, the column I created doesn't show up in the Excel file. Any help would be much appreciated. Thanks!
EDIT:
Okay, I was grabbing the column name instead of the actual data in the column... because I'm an idiot. The new column still doesn't show up in the exported Excel file. Here's the updated code:
Dim dt As New DataTable()
dt = SqlHelper.ExecuteDataset(connString, "storedProcedure", Session("Member"), DBNull.Value, DBNull.Value).Tables(0)
Dim dc As New DataColumn("New Column", Type.GetType("System.String"))
dc.DefaultValue = "N"
dt.Columns.Add(dc)
'set the values of the new column based on info pulled from db
Dim myCommand As SqlCommand
Dim myConn As SqlConnection = New SqlConnection(ConfigurationSettings.AppSettings("connString"))
Dim reader As SqlDataReader
For Each row As DataRow In dt.Rows
Dim uID As Integer = Convert.ToInt32(row.Item(0))
Dim pID As String = row.Item(2).ToString
Dim qry As String = "SELECT * FROM [MyTable] WHERE [UserID] = " & uID & " AND [PassID] = '" & pID & "'"
myConn.Open()
myCommand = New SqlCommand(qry, myConn)
reader = myCommand.ExecuteReader()
If reader.Read() Then
row.Item("New Column") = "Y"
Else
row.Item("New Column") = "N"
End If
myConn.Close()
Next row
dt.AcceptChanges()
Dim dv As New DataView()
dv = dt.DefaultView
Export.CreateExcelFile(dv, strFileName)
I suppose that you want to search your MyTable if it contains a record with the uid and the pid for every row present in your dt table.
If this is your intent then your could write something like this
Dim qry As String = "SELECT UserID FROM [MyTable] WHERE [UserID] = #uid AND [PassID] = #pid"
Using myConn = New SqlConnection(ConfigurationSettings.AppSettings("connString"))
Using myCommand = new SqlCommand(qry, myConn)
myConn.Open()
myCommand.Parameters.Add("#uid", OleDbType.Integer)
myCommand.Parameters.Add("#pid", OleDbType.VarWChar)
For Each row As DataRow In dt.Rows
Dim uID As Integer = Convert.ToInt32(row(0))
Dim pID As String = row(1).ToString()
cmd.Parameters("#uid").Value = uID
cmd.Parameters("#pid").Value = pID
Dim result = myCommand.ExecuteScalar()
If result IsNot Nothing Then
row.Item("New Column") = "Y"
Else
row.Item("New Column") = "N"
End If
Next
End Using
End Using
Of course the exporting to Excel of the DataTable changed with the new column should be done AFTER the add of the column and this code that updates it
In this code the opening of the connection and the creation of the command is done before entering the loop over your rows. The parameterized query holds the new values extracted from your ROWS not from your column names and instead of a more expensive ExecuteReader, just use an ExecuteScalar. If the record is found the ExecuteScalar just returns the UserID instead of a full reader.
The issue was in my CreateExcelFile() method. I inherited the app I'm modifying and assumed the method dynamically read the data in the DataTable and built the spreadsheet. In reality, it was searching the DataTable for specific values and ignored everything else.
2 lines of code later, I'm done.
I was trying to set DevExpress Chart Series from Data inside SQL Table.
Everything went fine except that the chart takes only the last attribute from the last series.
My code is:
con.Open() 'it opens SQL Connection
For i = 0 To (CheckedListBoxControl1.CheckedItems.Count - 1) 'list from ListBox
Lst.Add(CheckedListBoxControl1.CheckedItems(i).ToString) 'Putting Data in Array List
Dim Strl As String = String.Format("Select * from VPRogressCumulative where fname like '{0}' and lname like '{1}' order by id, no, CAST('1.' + date AS datetime)", ComboBox1.Text, Lst(i))
Dim sqlCom As New SqlCommand(Strl)
sqlCom.Connection = con
Dim myDA As SqlDataAdapter = New SqlDataAdapter(sqlCom)
Dim myDataSet As DataSet = New DataSet()
myDA.Fill(myDataSet, "VPRogressCumulative")
ChartControl1.DataSource = myDataSet
ChartControl1.DataAdapter = myDA
Dim ser As New Series(Lst(i), ViewType.Line)
ChartControl1.Series.Add(ser)
ser.ArgumentDataMember = "VPRogressCumulative.Date"
ser.ValueDataMembers.AddRange(New String() {"VPRogressCumulative.Cumulative"})
Next
con.Close()
I believe my Problem is in:
Dim ser As New Series(Lst(i), ViewType.Line)
ChartControl1.Series.Add(ser)
ser.ArgumentDataMember = "VPRogressCumulative.Date"
ser.ValueDataMembers.AddRange(New String() {"VPRogressCumulative.Cumulative"})
Last two lines are giving the same series new attributes which I wasn't able to resolve the issue.
Your problem is here:
ChartControl1.DataSource = myDataSet
ChartControl1.DataAdapter = myDA
In each iteration of cycle you are creating the new DataSet and it's overrides previous DataSource in your ChartControl1. Your must use Series.DataSource instead of ChartControl.DataSource. Also you can use DataTable instead of DataSet.
Here is example:
'Your code:
'Dim myDataSet As DataSet = New DataSet()
'myDA.Fill(myDataSet, "VPRogressCumulative")
'ChartControl1.DataSource = myDataSet
'ChartControl1.DataAdapter = myDA
'Replace with this:
Dim myDataTable As DataTable = New DataTable("VPRogressCumulative")
myDA.Fill(myDataTable)
Dim ser As New Series(Lst(i), ViewType.Line)
ChartControl1.Series.Add(ser)
'Your code.
'ser.ArgumentDataMember = "VPRogressCumulative.Date"
'ser.ValueDataMembers.AddRange(New String() {"VPRogressCumulative.Cumulative"})
'Replace with this:
ser.DataSource = myDataTable
ser.ArgumentDataMember = "Date"
ser.ValueDataMembers.AddRange(New String() {"Cumulative"})