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How do add a text block to the column header?

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GridView
This is a migrated thread and some comments may be shown as answers.
Jerry Kurata
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Jerry Kurata asked on 11 Mar 2011, 08:32 PM
Hi,

We are adding a feature that lets users summarize the data in columns containing lists of numbers.  The user can select to show either the unsummarized, maximum, minimum, or average values.  I have the calculations working, but now need to display the column's current summarization mode in the column header. I want to show this mode in a different font size from the rest of the header, and perhaps offset to the left.

I assume the best way to do this would be to add an addition text block to the header template, bind the current summarization value to a string, and then hide and show the text block based on the presence of the string or a visibility property.  However, I am unsure of the exact changes I need to alter the column header and how to wire up any bound properties to the column header.

Can someone provide me some guidance?

Thanks,

Jerry


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Maya
Telerik team
answered on 12 Mar 2011, 01:44 PM
Hello Jerry Kurata,

There are a couple of options. Firstly, you may just update the header by concatenating the desired string. It might be something similar to this one:

this.playersGrid.Columns[0].Header = this.playersGrid.Columns[0].Header + " myState";

Another possibility may be to define the Header like:
<telerik:GridViewDataColumn DataMemberBinding="{Binding Name}">
                    <telerik:GridViewDataColumn.Header>
                        <StackPanel Orientation="Vertical">
                            <TextBlock Text="Name" />
                            <TextBlock x:Name="myTxtBlock"/>
                        </StackPanel>
                    </telerik:GridViewDataColumn.Header>
                </telerik:GridViewDataColumn>

 
And handle the change of the text like:
private void Button1_Click(object sender, RoutedEventArgs e)
        {
            var panelche = this.playersGrid.Columns[0].Header as StackPanel;
            var txt = panelche.ChildrenOfType<TextBlock>();
            foreach(TextBlock txtBlock in txt)
            {
                if(txtBlock.Name == "myTxtBlock")
                {
                    txtBlock.Text = "myState";
                }              
            }      
        }
 

Kind regards,
Maya
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Jerry Kurata
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Maya
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