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loop through gridview

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GridView
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Sameh
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Sameh asked on 27 May 2009, 07:20 AM
Dear Sir,
I have an application with RadGridView and a button, on of the columns of the Grid contains a check box (not binding to any data).
i want to loop through all the rows of the grid on the button click event and check of the check box is check and show a message with a field of the data in the same row, please tell me how to do this.

thank you

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Vlad
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answered on 27 May 2009, 07:50 AM
Hi Sameh,

You can find small example attached.

All the best,
Vlad
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Sameh
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answered on 27 May 2009, 09:51 AM
Thank you very much,
actualy I am using VB.NET, and I tried to write the same code in VB.NET and I got an error (below is my button click event):



        Dim GridRows As IList(Of GridViewRow) = RadGridView1.ChildrenOfType(Of GridViewRow)()

        For Each r As GridViewRow In GridRows

            If Not (TypeOf r Is GridViewNewRow) AndAlso Not (TypeOf r Is GridViewHeaderRow) Then

                ' MessageBox.Show(CType(r.FindName("chk"), CheckBox).IsChecked.ToString)

            End If

        Next

the error location is yellow highlited, the error message is: (Expression of type 'Telerik.Windows.Controls.GridView.GridViewRow' can never be of type 'Telerik.Windows.Controls.GridView.GridViewHeaderRow')

can you please tell me if i have a problem somewhere.

also when i tried to write the XAML file as in your example i got an error also (yellow highlited)

<telerik:GridViewColumn>

                    <telerik:GridViewColumn.CellTemplate>

                        <DataTemplate>

                            <CheckBox />

                        </DataTemplate>

                    </telerik:GridViewColumn.CellTemplate>

                </telerik:GridViewColumn>

the error message is: the attached property CellTemplate was not found in type GridViewColumn, so i wrote the XAML like this:

 

 

<telerik:GridViewDataColumn HeaderText="check me" Width="Auto">

 

 

 

<telerik:GridViewColumn.CellStyle>

 

 

 

<Style TargetType="telerik:GridViewCell">

 

 

 

<Setter Property="Template">

 

 

 

<Setter.Value>

 

 

 

<ControlTemplate TargetType="telerik:GridViewCell">

 

 

 

<CheckBox Name="chk"></CheckBox>

 

 

 

</ControlTemplate>

 

 

 

</Setter.Value>

 

 

 

</Setter>

 

 

 

</Style>

 

 

 

</telerik:GridViewColumn.CellStyle>

 

 

 

</telerik:GridViewDataColumn>

 



it is working now but can you please tell me what is the problem in the previous code.

Thank you






 

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Vlad
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answered on 27 May 2009, 10:48 AM
Hi Sameh,

Do you have our latest version? CellTemplate is available since Q1 2009.

Regards,
Vlad
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Sameh
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answered on 27 May 2009, 11:16 AM
this is the version i have: 2009.1.312.35,
I removed the references from my project and added a refrences to the DLL files from your projects and it is worked (the XAML file only) but the code behind error (VB.NET error) is still.
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Vlad
Telerik team
answered on 28 May 2009, 07:37 AM
Hello Sameh,

My mistake! You can remove GridViewHeaderRow check.

Greetings,
Vlad
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Sajjad Shah
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answered on 12 Nov 2010, 11:21 PM
Can this happen in silvelight RadGridView? I also want to loop throught the grid rows and wanted to update ceratin control in the cell of the row.?? Very urgent and Important for me.
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Milan
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answered on 15 Nov 2010, 08:25 AM
Hi Sajjad Shah,

The best approach is to loop through all data item and update their properties. If the data object implement INotifyPropertyChanged, and they should, the UI will be updated automatically.

You can easily loop through all items using RadGridView's Items property:

foreach (var item in this.playersGrid.Items)
{
    var mydataItem = item as MyDataItemType;
  
    mydataItem.Property1 = "NewValue";
}


Greetings,
Milan
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GridView
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Sameh
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Vlad
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Sameh
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Sajjad Shah
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Milan
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