I'm a beginner in VB6.
I am creating an application that contains a TDBGrid.
My problem is how can i get the row selected in this TDBGrid.
As you said you have changed to dbgrid then you can do below
Dim row As GridViewRow = GridView1.SelectedRow
Dim CellValue = row.Cells(1).Text
Related
I need to create many dropdownlists at runtime and select a different item for each one.
To avoid accessing the DB continuously I create a single dropdownlist of which I copy the items in the cloned dropdownlists. Strangely all the dropdownlists created select the item of the last dropdownlist and I don't understand why! I had to insert the cleaning of the selected items ["DlistClone.ClearSelection ()"] because otherwise the code goes wrong. Can anyone help me? thanks
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim MyRow As New TableRow
Dim MyCell As New TableCell
Dim DList As DropDownList
Dim DlistClone As DropDownList
DList = New DropDownList
DList.Items.Add("1")
DList.Items.Add("2")
DList.Items.Add("3")
MyRow = New TableRow
MyCell = New TableCell
DlistClone = New DropDownList
ClonaDList(DList, DlistClone)
DlistClone.ClearSelection()
DlistClone.Items.FindByText("3").Selected = True
MyCell.Controls.Add(DlistClone)
MyRow.Cells.Add(MyCell)
Table1.Rows.Add(MyRow)
MyRow = New TableRow
MyCell = New TableCell
DlistClone = New DropDownList
ClonaDList(DList, DlistClone)
DlistClone.ClearSelection()
DlistClone.Items.FindByText("2").Selected = True
MyCell.Controls.Add(DlistClone)
MyRow.Cells.Add(MyCell)
Table1.Rows.Add(MyRow)
End Sub
Sub ClonaDList(ByVal Origine As DropDownList, ByVal Destinazione As DropDownList)
Dim I As Integer
Dim EleList As ListItem
For I = 0 To Origine.Items.Count - 1
EleList = Origine.Items(I)
Destinazione.Items.Add(EleList)
Next I
End Sub
Ok, I got it myself!
When I do
EleList = Origin.Items (I)
Destination.Items.Add (EleList)
I create an inadvertent binding between the source Dropdownlist and the destination one.
To interrupt the binding I must necessarily use a bridge between the two controls, in this case I use the Listitem object by setting the 2 properties in 2 successive steps
Sub ClonaDList(ByRef Origine As DropDownList, ByRef Destinazione As DropDownList)
Dim I As Integer
Dim EleList As ListItem
For I = 0 To Origine.Items.Count - 1
EleList = New ListItem
EleList.Text = Origine.Items(I).Text
EleList.Value = Origine.Items(I).Value
Destinazione.Items.Add(EleList)
Next I
End Sub
Did I say it right?
I am making a risk-type game for school that dynamically creates a 4x4 grid of buttons inside a table layout panel in visual basic. I have successfully created the panel and buttons with names that correspond to the row and column of the button. There are also two parallel arrays - one for button owner and the other for button number - that correspond to the owner of the button and the number of "armies" in the button. My issue is that when the user clicks a certain button, I need to reference the button name/value to know how many "armies" the button has to control the "attack" portion of the player's turn.
The following code creates the table layout panel and the buttons with names.
'Create table Dynamically
Dim ColCount As Integer = 4
Dim RowCount As Integer = 4
Dim f As New System.Drawing.Font("Arial", 15)
riskTable.AutoScroll = True
riskTable.Dock = DockStyle.Fill
riskTable.ColumnCount = ColCount
riskTable.RowCount = RowCount
For rowNo As Integer = 0 To riskTable.RowCount - 1
For columnNo As Integer = 0 To riskTable.ColumnCount - 1
Dim buttonname As String
buttonname = "B" & rowNo & columnNo
Dim button As Control = New Button
button.Size = New Size(179, 100)
button.Name = buttonname
button.Text = "1"
button.ForeColor = Color.White
button.Font = f
AddHandler button.Click, AddressOf buttonname_Click
riskTable.Controls.Add(button, columnNo, rowNo)
Next
Next
Me.Controls.Add(riskTable)
This is the dynamic event handler that I created. I tried using 'Me.Click' to get the name of the button, but it only returns the name of the form. I need to have code in here that references the name of the currently clicked button to then in turn reference the box owner and box number arrays.
Private Sub buttonname_Click(sender As Object, e As EventArgs) Handles Me.Click
MessageBox.Show(Me.Name)
End Sub
Any help would be greatly appreciated! I think that once I get this working, the rest of the game will be pretty simple to figure out.
Thanks!
Put the name in 'button.Tag' instead/also:
button.Tag = buttonname
Then it is easy to get the name with:
Private Sub buttonname_Click(sender As Object, e As EventArgs) Handles Me.Click
Dim result As String = CType(CType(sender, System.Windows.Forms.Button).Tag, String)
End Sub
(Check the System.Windows.Forms.Button though, might need some tweak to match your buttons inside the table. riskTable.Controls.button ?)
I am creating an application in vb.net. I have a datagridview control in my VB form. I need to view it on printpreview window with the contents in it. I have other control like labels and textboxes in the form and I can view all in printpreview. In the case of Datagridview control, I have a working printpreview code which I got from net. My problem is, I need to change the x and y positions of datagridview control. With the following code, the datagridview control is displaying over the other controls. I dont know how to do it in this code. Please help me.
I need to change the x and y positions of DataGridView like given in the below code(50 and 225).
e.Graphics.DrawString(Label7.Text, Label7.Font, Brushes.Black, 50, 225)
The code I used to display gridview is given below.
Code :
Dim ColumnCount As Integer = DataGridView1.ColumnCount
Dim RowCount As Integer = DataGridView1.RowCount
Dim CellTopPos As Integer = PrintDocument1.PrinterSettings.DefaultPageSettings.Margins.Top
For Row = 0 To RowCount - 2
Dim CellLeftPos As Integer = PrintDocument1.PrinterSettings.DefaultPageSettings.Margins.Left
For Cell = 0 To ColumnCount - 1
Dim CellValue As String = DataGridView1.Rows(Row).Cells(Cell).Value.ToString()
Dim CellWidth = DataGridView1.Rows(Row).Cells(Cell).Size.Width + 10
Dim CellHeight = DataGridView1.Rows(Row).Cells(Cell).Size.Height
Dim Brush As New SolidBrush(Color.Black)
e.Graphics.DrawString(CellValue, New Font("arial", 9), Brush, CellLeftPos, CellTopPos)
e.Graphics.DrawRectangle(Pens.Black, CellLeftPos, CellTopPos, CellWidth, CellHeight)
CellLeftPos += CellWidth
Next
CellTopPos += DataGridView1.Rows(Row).Cells(0).Size.Height
Next
Use this class .. unfortunately there is characters limit so i can not able to post code
http://www.codeproject.com/Articles/18042/Another-DataGridView-Printer
i'm tring to create some label programmatically, the code doesn't return any error but i cannot see any label in my window.
dim dr As DatabaseRecord
dim sql As String
sql = "SELECT * FROM pack WHERE applicabilita_modello LIKE '%" + versione + "%'"
dim rs As RecordSet = database.SQLSelect(sql)
dim i As Integer = 1
dim test(10) As Label
while not rs.EOF
test(i) = new Label
test(i).Text = rs.Field("descrizione").StringValue
test(i).Left = me.Left
test(i).Top = me.Top * i
test(i).Enabled = true
test(i).Visible = true
rs.MoveNext
i = i + 1
wend
rs.Close
i've verified that the recordset contain some data, the loop work correctly but no label is shown and cannot understand why.
thanks for any help
There are two ways to create controls at runtime in Real Studio. The first is to create a control array. You could name the control MyLabel and give it an index of zero. Then your code would be:
test(i) = new MyLabel
The second is to use a ContainerControl. This container would contain a label and because you can add them to your window (or other container) using the NEW command and using the ContainerControl.EmbedWithin method.
I generally prefer the ContainerControl approach for many reasons, but mostly because control arrays make the logic a big more convoluted. The only drawback with containers is that it requires Real Studio Professional or Real Studio Enterprise.
http://docs.realsoftware.com/index.php/UsersGuide:Chapter_5:Creating_New_Instances_of_Controls_On_The_Fly
http://docs.realsoftware.com/index.php/ContainerControl
Using VB6
Listview
ID Name
001 Raja
002 Ramu
003 Sajee
..
…
Code
Private Sub listview1_DblClick()
If Not (listview1.SelectedItem Is Nothing) Then
Textbox1.text = listview1.selectedItem(0)
Textbox2.text = listview1.SelectedItem(1)
End If
End Sub
Above code is not showing the values in the text box
How to show the list view row values in the text box.
Need VB6 Code Help
The ListView SelectedItem property does not return a collection of items selected on your ListView, so therefore you can't explicitly get the first selected item, the second selected item, etc. You will need to loop through all ListItems in your ListView and check if each is selected. If it is, do what you want to do.
One problem I see with your sample code is you're using the ListView DblClick event. I might be wrong, but it looks like whenever it fires only one ListView item can be selected (the one that fired the event). A solution for this is to put your code into a new procedure. Here's one that should work:
Private Sub GetSelectedItems()
' Make sure exactly two items are selected on our ListView.
If (CheckListViewSelectedItemCount(listview1, 2)) Then
Dim blnFoundFirstItem As Boolean
blnFoundFirstItem = False
Dim i As Integer
' Find out which items are selected.
For i = 1 To listview1.ListItems.Count
If (listview1.ListItems(i).Selected) Then
' Assign the Text of the 'first' selected item to Textbox1.Text.
If (Not blnFoundFirstItem) Then
Textbox1.Text = listview1.ListItems(i).Text
blnFoundFirstItem = True
' Assign the Text of the 'second' selected item to Textbox2.Text.
Else
Textbox2.Text = listview1.ListItems(i).Text
End If
End If
Next i
Else
MsgBox "You need to select two items."
End If
End Sub
I'm not sure in which order ListItems are iterated through in my For loop. It's possible that what would be assigned to Textbox1.Text in my code you might want to assign to Textbox2.Text.
Your code required at that at least two items are selected on the ListView. I don't know if VB6 has a way to return the number of selected items so I wrote a small function that does this:
' Return True if the passed ListView control has a number of selected items that's equal to the intExpectedItemCount parameter.
Private Function CheckListViewSelectedItemCount(listView As listView, intExpectedItemCount As Integer) As Boolean
Dim intSelectedItemCount As Integer
intSelectedItemCount = 0
Dim i As Integer
For i = 1 To listView.ListItems.Count
If (listView.ListItems(i).Selected) Then
intSelectedItemCount = intSelectedItemCount + 1
End If
Next i
CheckListViewSelectedItemCount = (intSelectedItemCount = intExpectedItemCount)
End Function
I dont have vb6 at hand and its been a while since I used it, but if memory serves me right:
ListView1.SelectedItem will return you a ListViewItem which gives you a Text property along with SubItems property that gives you access to associated columns as an array.