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Header cell image gets reset on mouse over

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GridView
This is a migrated thread and some comments may be shown as answers.
Peter Luth
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Peter Luth asked on 16 Feb 2009, 10:14 AM
Hello,

I am using the RowFormatting event to set an image to the GridRowHeaderCellElement. This is working. However when a user hovers the mouse over the header cell, the image gets removed, and it will only get reset if he clicks a row again.

Here is the code I use for RowFormatting:

void RowFormatting_ImageChanging(object sender, Telerik.WinControls.UI.RowFormattingEventArgs e) 
        { 
            GridRowHeaderCellElement grhce = e.RowElement.Children[0] as GridRowHeaderCellElement; 
 
            if (grhce != null
            { 
                GridViewEditableEntry aa = e.RowElement.RowInfo.DataBoundItem as GridViewEditableEntry; 
                if (aa != null
                { 
                    if (aa.Changed) 
                        grhce.Image = myimage1; 
                    else if (aa.IsEditable) 
                        grhce.Image = myimage2; 
                    else if (!aa.IsEditable) 
                        grhce.Image = myimage3; 
                } 
                else 
                { 
                    grhce.Image = null
                } 
            } 
        } 

How can I prevent the header cell image to get reset?

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Jack
Telerik team
answered on 16 Feb 2009, 05:31 PM
Hi Martin,

You can do this by using custom row header cells. You should process the CreateCell event. Please consider the code snippet below:

void radGridView1_CreateCell(object sender, GridViewCreateCellEventArgs e) 
    if (e.CellType == typeof(GridRowHeaderCellElement)) 
    { 
        e.CellElement = new MyHeaderCell(e.Column, e.Row); 
    } 
 
public class MyHeaderCell : GridRowHeaderCellElement 
    public MyHeaderCell(GridViewColumn column, GridRowElement row) 
        : base(column, row) 
    { 
    } 
 
    public override void UpdateInfo() 
    { 
        base.UpdateInfo(); 
        this.Image = Resources.blue; 
    } 
 

I hope this helps. Do not hesitate to write us back if you have questions.

Regards,
Jack
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Peter Luth
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answered on 17 Feb 2009, 10:38 AM
Thanks. Works like a charm!
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Peter Luth
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Jack
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Peter Luth
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