griderrorin rad control

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<radG:RadGrid ID="RadGrid1" Skin="Office2007" DataSourceID="dsParent" EnableAJAX="True"
ShowGroupPanel="True" ShowStatusBar="True" runat="server" Width="95%" AutoGenerateColumns="False"
AllowSorting="True" AllowPaging="True" GridLines="None" AllowMultiRowSelection="True"
OnItemCommand="RadGrid1_ItemCommand" önPreRender="RadGrid1_PreRender">
<pagerstyle mode="NumericPages">

<mastertableview width="100%" datakeynames="CustomerID" allowmulticolumnsorting="True">
DataSourceID="dsParent">
<columns> <radg:gridtemplatecolumn uniquename="TemplateColumn" xmlns:radg="#unknown">
<HeaderTemplate>
<asp:ImageButton ID="ExpandAll" runat="server" CommandName="ExpandAll" ImageUrl="~/RadControls/Grid/Skins/Office2007/SinglePlus.gif"
ToolTip="ExpandAll" />
<asp:ImageButton ID="CollapseAll" runat="server" CommandName="CollapseAll" Visible="False"
ImageUrl="~/RadControls/Grid/Skins/Office2007/SingleMinus.gif" ToolTip="CollapseAll" />
</HeaderTemplate>

<radg:gridboundcolumn sortexpression="CustomerID" headertext="CustomerID" datafield="CustomerID" xmlns:radg="#unknown">
UniqueName="CustomerID" FilterListOptions="VaryByDataTypeAllowCustom">

<radg:gridboundcolumn sortexpression="ContactName" headertext="Contact Name" datafield="ContactName" xmlns:radg="#unknown">
UniqueName="ContactName" FilterListOptions="VaryByDataTypeAllowCustom">

<radg:gridboundcolumn sortexpression="CompanyName" headertext="Company" datafield="CompanyName" xmlns:radg="#unknown">
UniqueName="CompanyName" FilterListOptions="VaryByDataTypeAllowCustom">

<sortexpressions>
<radg:gridsortexpression fieldname="CompanyName" xmlns:radg="#unknown">

<editformsettings>
<editcolumn uniquename="EditCommandColumn1">

<expandcollapsecolumn>
<HeaderStyle Width="19px" />

<rowindicatorcolumn visible="False">
<HeaderStyle Width="20px" />

<filteritemstyle bordercolor="Red" width="50px">

Posted 22-Dec-13 22:00pm

pune

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pune · Answer 1 · 2013-12-23T02:24:00

protected void RadGrid1_ItemCommand(object source, Telerik.WebControls.GridCommandEventArgs e)
   {

       if (e.CommandName == "ExpandAll")
       {

           RadGrid1.MasterTableView.GetColumn("ContactName").Visible = false;  //Code to hide a column
                       //Hiding the CollapseAll image in the header to true and ExpandAll image in the header to false
           GridHeaderItem GridHeaderItem = e.Item as GridHeaderItem;
           ImageButton imgCollapseAll = (ImageButton)GridHeaderItem.FindControl("CollapseAll");
           imgCollapseAll.Visible = true;
           ImageButton imgExpandAll = (ImageButton)GridHeaderItem.FindControl("ExpandAll");
           imgExpandAll.Visible = false;
       }
       if (e.CommandName == "CollapseAll")
       {
           RadGrid1.MasterTableView.GetColumn("ContactName").Visible = true;
           //Hiding the CollapseAll image in the header to false and ExpandAll image in the header to true
           GridHeaderItem GridHeaderItem = e.Item as GridHeaderItem;
           ImageButton imgCollapseAll = (ImageButton)GridHeaderItem.FindControl("CollapseAll");
           imgCollapseAll.Visible = false;
           ImageButton imgExpandAll = (ImageButton)GridHeaderItem.FindControl("ExpandAll");
           imgExpandAll.Visible = true;
       }

       if (e.CommandName == "ExpandAll1")
       {

           RadGrid1.MasterTableView.GetColumn("ContactName").Visible = false;  //Code to hide a column
           //Hiding the CollapseAll image in the header to true and ExpandAll image in the header to false
           GridHeaderItem GridHeaderItem = e.Item as GridHeaderItem;
           ImageButton imgCollapseAll = (ImageButton)GridHeaderItem.FindControl("ImageButton2");
           imgCollapseAll.Visible = true;
           ImageButton imgExpandAll = (ImageButton)GridHeaderItem.FindControl("ImageButton1");
           imgExpandAll.Visible = false;
       }
       if (e.CommandName == "CollapseAll1")
       {
           RadGrid1.MasterTableView.GetColumn("ContactName").Visible = true;
           //Hiding the CollapseAll image in the header to false and ExpandAll image in the header to true
           GridHeaderItem GridHeaderItem = e.Item as GridHeaderItem;
           ImageButton imgCollapseAll = (ImageButton)GridHeaderItem.FindControl("ImageButton2");
           imgCollapseAll.Visible = false;
           ImageButton imgExpandAll = (ImageButton)GridHeaderItem.FindControl("ImageButton1");
           imgExpandAll.Visible = true;
       }
   }