When a user log in you may want to set permissions for editing grid items depending on the security settings for the corresponding account. For this purpose you can create an
extra boolean column in the grid data source which reflects the permission status for the logged user (we can call it permission column). Then in the
ItemDataBound event of Telerik RadGrid you can traverse all GridDataItems, check the value of the permission column (true
or false) and enable/disable the [Edit] button for the currently bound grid item to allow/prevent the edit operation for it.
In the example below we assume that the Bool column in the grid data source is our permission column. Note that you can hide the column if you wish by setting
its Display property to false:
| ASPX/ASCX |
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<telerik:RadGrid id="RadGrid1" runat="server">
<MasterTableView AutoGenerateColumns="False">
<Columns>
<telerik:GridBoundColumn HeaderText="Contact name" DataField="ContactName" UniqueName="Contact
name"></telerik:GridBoundColumn>
<telerik:GridBoundColumn HeaderText="Contact title" DataField="ContactTitle" UniqueName="ContactTitle"></telerik:GridBoundColumn>
<telerik:GridBoundColumn HeaderText="City" DataField="City" UniqueName="City"></telerik:GridBoundColumn>
<telerik:GridEditCommandColumn UniqueName="EditCommandColumn"></telerik:GridEditCommandColumn>
<telerik:GridCheckBoxColumn DataField="Bool" ReadOnly="True" UniqueName="CheckBoxColumn"
Display="True"></telerik:GridCheckBoxColumn>
</Columns>
</MasterTableView>
</telerik:RadGrid>
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And in the code-behind:
| C# |
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private void RadGrid1_ItemDataBound(object
sender, Telerik.Web.UI.GridItemEventArgs e)
{
if(e.Item is GridDataItem)
{
GridDataItem dataItem = e.Item as GridDataItem;
if(!(dataItem["CheckBoxColumn"].Controls[0] as CheckBox).Checked)
{
(dataItem[ "EditCommandColumn"].Controls[0]
as LinkButton).Enabled = false;
}
}
}
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| VB.NET |
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Private Sub RadGrid1_ItemDataBound(sender As Object, e As Telerik.Web.UI.GridItemEventArgs)
If TypeOf e.Item Is GridDataItem Then
Dim dataItem As GridDataItem = CType(e.Item, GridDataItem)
If Not CType(dataItem("CheckBoxColumn").Controls(0), CheckBox).Checked Then
CType(dataItem( "EditCommandColumn").Controls(0), LinkButton).Enabled = False
End If
End If
End Sub
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