i want when double click txtLocalEastDdfFrom on FORM4(FIBER_OPTIC) it returne value from FORM7(DDF_FROM) and fill txtLocalEastDdfFrom. this action work on FORM1 and FORM5,but dont work on FORM4 and FORM7.
please help me.
("FORM7=DDF_FROM")
Public Class DDF_FROM
Private Sub btnApplay_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnApplay.Click
FIBER_OPTIC.txtLocalEastDdfFrom.Text = CombDdfFromRow.Text & CombDdfFromBay.Text & "-" & CombDdfFromShelf.Text & "-" & CombDdfFromNumber.Text
Me.Close()
End Sub
End Class
txtLocalEastDdfFrom IS ON ("FORM4=FIBER_OPTIC")
Private Sub txtLocalEastDdfFrom_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtLocalEastDdfFrom.DoubleClick
Dim EastddfAdd As New DDF_FROM
EastddfAdd.Show()
End Sub
Don't use New Form just to display the form use instead it's actual form name to display like
Form4.Show()
Then...
Form4.TextBox1.Text = Form7.TextBox1.Text
Related
I have a form that does some mathematical calculation.
I want to be able users to enter data quickly without erasing the value.
I thing its good to use placeholder like I did in html
but how can i use it in VB.Net 2010?
Thanks
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
gtp.Text = "0.00"
vatt.Text = "0.00"
wht.Text = "0.00"
npr.Text = "0.00"
End Sub
This code clears the text box if the current value is the placeholder value, otherwise it retains the input value.
Public Class Form1
Private Sub TextBox1_GotFocus(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.GotFocus
If TextBox1.Text = "0.00" Then
TextBox1.Text = ""
End If
End Sub
Private Sub TextBox1_LostFocus(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.LostFocus
If TextBox1.Text = "" Then
TextBox1.Text = "0.00"
End If
End Sub
End Class
If you always want it to clear the textbox then use this.
Public Class Form1
Private Sub TextBox1_GotFocus(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.GotFocus
TextBox1.Text = ""
End Sub
Private Sub TextBox1_LostFocus(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.LostFocus
If TextBox1.Text = "" Then
TextBox1.Text = "0.00"
End If
End Sub
End Class
To simulate an actual placeholder such as the one in HTML5 you'll need to overlay a label control on top of your textbox and set it's visability based on the event keyDown and LostFocus/Leave Event which will depend on your version of VS
I created DLL for this work.
https://1drv.ms/u/s!AmR1BM6vUcAGgYsLPvjrec0Z92OTlQ
Or you can download the project PlaceHolder class
https://1drv.ms/u/s!AmR1BM6vUcAGgYsMNFGbtW5HL_4Ifw
How to use?
In your winform project add the DLL.
(I added groupbox for this example)
CS Code:
var textBoxWithPlaceHolder = new Placeholder.PlaceholderTextBox();
textBoxWithPlaceHolder.PlaceholderText = "Search text";
textBoxWithPlaceHolder.Location = new Point(x: 10, y: 20);
GBTextBox.Controls.Add(textBoxWithPlaceHolder);
Result winform
In my frmMain class I have a textbox(txtCustomer) which populates from a database. I want to pass this value to another textbox in frmDepartment(txtDeptCustomer).
I am failing to see the logic of why the code I am using is not displaying a value in txtDeptCustomer. I can query the database ok with the variable, so the string is being passed through, but just not displaying in txtDeptCustomer. I would be grateful if someone could point out my error. Thanks
frmDepartment
Dim customer As Object = frmMain.txtCustomer.Text
This is passing correct value to db.
sql = "SELECT * FROM Departments where Customer = '" & CType(customer, String) & "'"
textbox txtDeptCustomer <--- NOT DISPLAYING VALUE
Private Sub txtDeptCustomer_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtDeptCustomer.TextChanged
txtDeptCustomer.Text = CType(customer, String)
End Sub
Public Customer as String = Nothing
Private Sub btnDO_Click(sender As Object, e As EventArgs) Handles btnDoWork.Click
Customer = Database Call
Dim frmDepartmentInstance as new frmDepartment
frmDepartment.ShowDialog(Me)
End Sub
Then in the Load event of frmDepartment you can say
txtDeptCustomer.Text = frmMain.Customer
Proof of concept: New Project. Two forms | Form 1 has a button and a textbox | Form2 just has textbox
Public Class Form1
Public Test As String = Nothing
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Test = TextBox1.Text
Dim frm2 As New Form2
frm2.ShowDialog(Me)
End Sub
End Class
Public Class Form2
Private Sub Form2_Load(sender As Object, e As EventArgs) Handles MyBase.Load
TextBox1.Text = Form1.Test
End Sub
End Class
You must declare then as public your customer variable in frmDepartment, like:
Public customer as String
And in the button click from your frmMain you pass the value like:
frmDepartment.customer = txtCustomer.Text
frmDepartment.Show()
And then in Loading your frmDepartment you have now the option of assigning customer to txtDeptCustomer like:
Private Sub frmDepartment_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
txtDepartment.Text = customer
End Sub
This has been killing me for a couple of weeks now. I have a browser that I've made and it's using a TabControl. Every time the TabPage "+" is clicked, a new one is added. Each one of these TabPages has userControls (WebBrowser, Address Bar, Back Button, Forward Button, etc..). When the user resizes Form1, I want all userControls to fit to the TabPage/Form1.
Basically, I want my userControls to fit the current size of the Form but I can't figure it out. Right now, I have the TabControls working but that was done by simply using the Anchor property. That option isn't avialable for the UserControls. I manually anchored it programatically but it doesn't resize. It just sticks everything right in the middle with the smaller size....
here's the Code:
'THIS IS THE CODE FOR THE FORM
Imports System.IO
Public Class Form1
'The Global Variables
Dim theControls1 As New theControls
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
TabPage1.Controls.Add(theControls1)
theControls1.theBrowser.Navigate("http://google.com")
End Sub
Private Sub Form1_SizeChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.SizeChanged
'For Auto Sizing theControls to Form1
theControls1.Width = TabControl1.Width - 8
theControls1.Height = TabControl1.Height - 25
End Sub
Private Sub TabControl1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TabControl1.Click
'Add new tab with the same controls.
Dim theNewTab As New TabPage
Dim theOtherControls As New theControls
Dim theTabCounter As Integer = TabControl1.TabPages.Count
theOtherControls.AutoSize = True
theOtherControls.Width = TabControl1.Width
theOtherControls.Height = TabControl1.Height
theOtherControls.Anchor = AnchorStyles.Right & AnchorStyles.Left & AnchorStyles.Bottom & AnchorStyles.Top
Dim theSelectedTab As String = TabControl1.SelectedTab.Text
If theSelectedTab = "+" Then
TabControl1.TabPages.Insert(theTabCounter - 1, theNewTab)
theNewTab.Controls.Add(theOtherControls)
theControls1.theBrowser.Navigate("http://google.com")
theOtherControls.theBrowser.Navigate("http://google.com")
TabControl1.SelectTab(theTabCounter - 1)
End If
End Sub
End Class
'THIS IS THE CODE FOR THE USERCONTROLS
Imports System.IO
Imports System.Data.OleDb
Public Class theControls
'The History Database Connection String
Dim theHistoryDatabaseConn As New OleDbConnection
Private Sub ComboBox1_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles theAddressBar.KeyDown
'Navigate to Webpage stated in theAddressBar
If e.KeyValue = Keys.Enter Then
theBrowser.Navigate(theAddressBar.Text)
e.SuppressKeyPress = True
End If
End Sub
Private Sub goForward_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles goForward.Click
theBrowser.GoForward()
End Sub
Private Sub goBack_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles goBack.Click
theBrowser.GoBack()
End Sub
Private Sub theBrowser_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles theBrowser.DocumentCompleted
'Set Tab Text to current web page and Address Bar
Form1.TabControl1.SelectedTab.Text = theBrowser.Url.Host.ToString
Me.theAddressBar.Text = Me.theBrowser.Url.AbsoluteUri.ToString
'Read the History
theHistoryDatabaseConn.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\Marc Wilson\Documents\Visual Studio 2010\Projects\myBrowser\myBrowser\bin\Debug\TheHistoryDB.accdb"
theHistoryDatabaseConn.Open()
'Populate theAddressBar with the contents from the History
theAddressBar.Items.Clear()
Dim readTheHistory As String
Dim getTheHistory As OleDbCommand
readTheHistory = "SELECT [Host Name] FROM TheHistory"
getTheHistory = New OleDbCommand(readTheHistory, theHistoryDatabaseConn)
Dim theData As New OleDbDataAdapter(getTheHistory)
Dim theTable As New DataTable("TheHistory")
'theHistoryDatabaseConn.Open()
theData.Fill(theTable)
For Each row As DataRow In theTable.Rows
theAddressBar.Items.Add(row.Item("Host Name"))
Next
'Writes history to TheHistory Database (No Duplicates!)
If theAddressBar.Items.Contains(theBrowser.Url.Host.ToString) Then
Else
'Write The History
Dim writeTheHistory As OleDbCommand = New OleDbCommand("INSERT INTO TheHistory ([Host Name], [Absolute Path]) VALUES (theBrowser.URL.Host.ToString, theBrowser.URL.AbsoluteUri.ToString)", theHistoryDatabaseConn)
writeTheHistory.Parameters.Add("#Host Name", OleDbType.Char, 255).Value = theBrowser.Url.Host.ToString
writeTheHistory.Parameters.Add("#Absolute Path", OleDbType.Char, 255).Value = theBrowser.Url.AbsoluteUri.ToString
theHistoryDatabaseConn.Close()
theHistoryDatabaseConn.Open()
writeTheHistory.ExecuteNonQuery()
theHistoryDatabaseConn.Close()
End If
theHistoryDatabaseConn.Close()
End Sub
Private Sub theBrowser_ProgressChanged(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserProgressChangedEventArgs) Handles theBrowser.ProgressChanged
'Status Bar Text
Label1.Text = theBrowser.StatusText.ToString
End Sub
Private Sub theAddressBar_SelectedValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles theAddressBar.SelectedValueChanged
Me.theBrowser.Navigate(Me.theAddressBar.Text)
End Sub
End Class
Whenever you create an instance of your UserControl, set its Dock() property to Fill:
Dim theOtherControls As New theControls
theOtherControls.Dock = DockStyle.Fill
I have the problem to retreive the string from one form to another. here is my code: What's wrong with this?
Public Class Form3
Dim unit As String
Public itmname As String
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim obj1 As New Form4
itmname = tb1.Text
MessageBox.Show(itmname)
obj1.Label1.Text = itmname
obj1.Show()
End Sub
End Class
Public Class Form4
Private Sub Form4_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
With Form3
MessageBox.Show("item name:" + .itmname)
Label1.Text = .itmname
End With
End Sub
End Class
You shouldn't have to do any special code in Form4 to set the value. you already set the textbox value from from3's button click event. Setting again is just overwriting it with a blank value from a newly instantiated form. Just clear all the code you have listed in Form4's load event and it should work.
Using VB.Net (Windows Application)
In the form (called as FirstForm), i am using textbox, add-form Button, search button.
When i click the add-form button, it will give the new form (same as FirstForm)
Code for adding new form
Private Sub btnadd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnadd.Click
Dim SecondForm As New FirstForm
SecondForm.Show()
End Sub
Search Button Code
Private Sub Search_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Search.Click
If FirstForm.Focus = True Then
FirstForm.textbox1.Text = gridview1.Rows(crRow).Cells("code").Value.ToString().Trim()
Else
Dim SecondForm As New FirstForm
SecondForm.textbox1.Text = gridview1.Rows(crRow).Cells("code").Value.ToString().Trim()
End If
End Sub
The above code is working, but If i am in second Form when i click the search button and selected the value, then the value is appearing in the FirstForm textbox, it is not appearing in the SecondForm textbox.
If SecondForm is showing, the selected Value should appear in the SecondForm textbox not in the FirstForm Textbox.
How to solve this issue.
Need Vb.net code Help
Use Me - Reference variable which hold ref. of current form.
Dim frm As FirstForm
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
If IsNothing(frm) OrElse frm.IsDisposed Then
frm = New FirstForm
End If
frm.Show()
End Sub
Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click
Me.textbox1.Text = gridview1.Rows(crRow).Cells("code").Value.ToString().Trim()
End Sub
Using "me" will not solve the problem?? why are you referring to the form in a static way?
Private Sub Search_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Search.Click
textbox1.Text = gridview1.Rows(crRow).Cells("code").Value.ToString().Trim()
End Sub