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change datagrid cell bg color

Posted on 2009-04-02
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Last Modified: 2012-05-06
can someone give me the method and code to change the back ground color of an individual cell based upon the value in that cell or some other condition in vb.net?
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Question by:ddepuemd
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8 Comments
 
LVL 4

Expert Comment

by:Avelan
ID: 24048247
Not sure if this is what you needed but here's an example.

-Avelan
    Private Sub DataGridView_CellValueChanged(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView.CellValueChanged
        Dim MyCell As DataGridViewCell
 
        If e.ColumnIndex < 0 Or e.RowIndex < 0 Then
            Exit Sub
        End If
 
        MyCell = DataGridView.Item(e.ColumnIndex, e.RowIndex)
 
        If MyCell.Value Is Nothing Then
            Exit Sub
        End If
 
        If IsNumeric(MyCell.Value) Then
            Select Case MyCell.Value
                Case 1
                    DataGridView.CurrentCell.Style.BackColor = Color.BlanchedAlmond
                Case 2
                    DataGridView.CurrentCell.Style.BackColor = Color.Beige
                Case 3
                    DataGridView.CurrentCell.Style.BackColor = Color.Blue
                Case Else
                    DataGridView.CurrentCell.Style.BackColor = Color.DarkCyan
            End Select
 
        Else
            DataGridView.CurrentCell.Style.BackColor = Color.DarkOrange
        End If
 
    End Sub

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LVL 4

Expert Comment

by:Avelan
ID: 24048269
Doh, was a little hasty there.
Here's a bit more refined version although it works just the same :P

-Avelan
    Private Sub DataGridView_CellValueChanged(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView.CellValueChanged
        Dim MyCell As DataGridViewCell
 
        If e.ColumnIndex < 0 Or e.RowIndex < 0 Then
            Exit Sub
        End If
 
        MyCell = DataGridView.Item(e.ColumnIndex, e.RowIndex)
 
        If MyCell.Value Is Nothing Then
            Exit Sub
        End If
 
        With MyCell
            If IsNumeric(.Value) Then
                Select Case .Value
                    Case 1
                        .Style.BackColor = Color.BlanchedAlmond
                    Case 2
                        .Style.BackColor = Color.Beige
                    Case 3
                        .Style.BackColor = Color.Blue
                    Case Else
                        .Style.BackColor = Color.DarkCyan
                End Select
 
            Else
                .Style.BackColor = Color.DarkOrange
            End If
        End With
 
    End Sub

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0
 
LVL 3

Expert Comment

by:AxleWack
ID: 24057465
Not sure if this will work. But try it and see.

In your Gridview's RowDatabound, set the following depending on which cell you want to change:

e.Row.Cells(3).BackColor = Color.AliceBlue
So it will look something like this:

Protected Sub GridView2_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs)
        If e.Row.RowType = DataControlRowType.DataRow Then
           e.Row.Cells(3).BackColor = Color.AliceBlue
       End If
Hope it helps
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Author Comment

by:ddepuemd
ID: 24057555
Unfortunately, I am using 2003, which does not have the datagridview object...
0
 
LVL 3

Expert Comment

by:AxleWack
ID: 24057571
It shouldnt make a huge differance does it ? Does your gridview not have a RowDataBound? If yes, all you need to use in it is

 e.Row.Cells(3).BackColor = Color.AliceBlue

Or are you saying 2003 doesnt have a Gridview ?
0
 

Author Comment

by:ddepuemd
ID: 24057786
yes, 2003 does not have a gridview control.  so I have to use the standard datagrid
0
 
LVL 3

Expert Comment

by:AxleWack
ID: 24057916
Oh ok. Apologies. If the DataGrid does not have the same functionality. I have not used 2003(so assumed they were roughly the same). I will look around for you and let you know if I get an answer for you.
0
 
LVL 4

Accepted Solution

by:
Avelan earned 500 total points
ID: 24058305
Check this out

http://msdn.microsoft.com/en-us/library/ms996485.aspx

It seems there isn't an "easy" way to do what you want with datagrid but...

-Avelan
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