Conditional formatting

[ornus]

Is it possible to do conditional formatting based on the property of the value, in addition to the value.

For example, format red if value.Length > 50?

Thank you.

[Jack]

Yes, ornus, this is possible through the CellFormatting event of RadGridView. Here is a code snippet on how to achieve this (we assume you have a custom column of type Point named "Custom"):

this.radGridView1.CellFormatting += new CellFormattingEventHandler(radGridView1_CellFormatting);

void radGridView1_CellFormatting(object sender, CellFormattingEventArgs e)
{
    if (e.CellElement.ColumnInfo.UniqueName == "Custom")
    {
         Point point = (Point)e.CellElement.Value;
         if (point.Y < 10)
              e.CellElement.ForeColor = Color.Red;
         else
              e.CellElement.ForeColor = Color.Blue;
    }
}     


Let us know if you have other questions.
 
Kind regards,
Jack
the Telerik team

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[bradley baker]

Can we still access cells via this method in the Q1 2010 version?  When I try it says UniqueName is not a member of Telerik.WinControls.UI.GridViewColumn.

[Jack]

Hello bradley baker,

Yes, you can access the UniqueName property, which is now a property of the GridViewDataColumn. So, you should do a cast. We had to change this, because GridViewColumn is a base column type which is also inherited also from system columns which don't have unique names. Should you have other questions, feel free to contact me.

 

Greetings,
Jack
the Telerik team

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[bradley baker]

Can you give an example.  (VB pref)

[Jack]

Hi bradley,

here is the sample in VB:

Private Sub RadGridView1_CellFormatting(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.CellFormattingEventArgs) Handles RadGridView1.CellFormatting
    Dim column As GridViewDataColumn = TryCast(e.CellElement.ColumnInfo, GridViewDataColumn)
    Dim cell As GridDataCellElement = TryCast(e.CellElement, GridDataCellElement)
    If column IsNot Nothing And column.UniqueName = "Custom" Then
        Dim point As Point = CType(cell.Value, Point)
        If point.Y < 10 Then
            e.CellElement.ForeColor = Color.Red
        Else
            e.CellElement.ForeColor = Color.Blue
        End If
    End If
End Sub

 

Best wishes,
Jack
the Telerik team

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