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[Solved] Unable to get the edited value of controls from Radgrid

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Grid

This is a migrated thread and some comments may be shown as answers.

Kaushik Subramanya asked on 02 Sep 2009, 02:26 PM

Hello,
I am working on the evaluation copy of the Radgrid

I have a created a radgrid with editing capabilities. Once the user updates the item I am unable to get the edited values.

My code is listed below

ASPX Code

<telerik:RadGrid ID="RadGrid1" runat="server" AutoGenerateColumns="False" GridLines="None"

OnItemDataBound="RadGrid1_ItemDataBound" OnNeedDataSource="RadGrid1_NeedDataSource"

AllowSorting="True" AllowAutomaticInserts="True" AllowAutomaticUpdates="True"

AutoGenerateEditColumn="true" OnItemUpdated="RadGrid1_ItemUpdated" OnUpdateCommand="RadGrid1_UpdateCommand">

</RowIndicatorColumn>

</ExpandCollapseColumn>

<telerik:GridBoundColumn DataField="username" HeaderText="User Name" UniqueName="username" ReadOnly=true>

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="password" HeaderText="Password" UniqueName="password">

</telerik:GridBoundColumn>

<telerik:GridTemplateColumn HeaderText="Password" UniqueName="TemplateColumn">

<asp:DropDownList ID="DropDownList1" runat="server">

</asp:DropDownList>

</ItemTemplate>

</telerik:GridTemplateColumn>

</Columns>

</MasterTableView>

</telerik:RadGrid>

C# Code

protected

void RadGrid1_UpdateCommand(object source, GridCommandEventArgs e)

{

//Get the GridEditableItem of the RadGrid

GridEditableItem editedItem = e.Item as GridEditableItem;

//Get the primary key value using the DataKeyValue.

string sUserName = editedItem.OwnerTableView.DataKeyValues[editedItem.ItemIndex]["username"].ToString();

//Access the textbox from the edit form template and store the values in string variables.

string sPassword = (editedItem["password"].Controls[0] as TextBox).Text;

}

Any help is much appreciated.

Regards,
Kaushik

5 Answers, 1 is accepted

answered on 03 Sep 2009, 01:20 PM

Pavlina,
Thank you for sharing the link. It was very helpful and I was able to get the data from most of the columns.

Based on the website you mentioned I am getting an exception thrown (Null Pointer) when I am trying to read a DataKeyValue from the Hyperlinked column GridHyperLinkColumn

Below is my code.

ASPX Page
<telerik:RadGrid ID="Rad_Grid1" runat="server" AllowSorting="True"
                     GridLines="None" AllowMultiRowEdit="True" AllowMultiRowSelection="True"
                     AutoGenerateColumns="False" AutoGenerateEditColumn="True" AllowPaging="True"
                AllowCustomPaging="True" PageSize="25"
                     onupdatecommand="Rad_Grid1_UpdateCommand">
                     <MasterTableView EditMode="InPlace" DataKeyNames="UniqueId">
                         <Columns>
                             <telerik:GridBoundColumn DataField="ContractNo"
                                 HeaderText="Contract Number" UniqueName="ContractNo">
                                 <FooterStyle Font-Bold="True" />
                                 <HeaderStyle Font-Bold="False" Font-Italic="False" Font-Overline="False"
                                     Font-Strikeout="False" Font-Underline="False" HorizontalAlign="Center"
                                     Wrap="True" />
                                 <ItemStyle Font-Bold="False" Font-Italic="False" Font-Overline="False"
                                     Font-Strikeout="False" Font-Underline="False" HorizontalAlign="Center"
                                     Wrap="True" />
                             </telerik:GridBoundColumn>
                             <telerik:GridHyperLinkColumn DataNavigateUrlFields="UniqueId,RevisionNo"
                                 DataNavigateUrlFormatString="~/UpdateDetail.aspx?UniqueID={0}&RevisionNo={1}&
                                 DataTextField="UniqueId" HeaderText="Unique ID" UniqueName="UniqueId">
                                 <HeaderStyle Font-Bold="False" Font-Italic="False" Font-Overline="False"
                                     Font-Strikeout="False" Font-Underline="False" HorizontalAlign="Center"
                                     Wrap="True" />
                                 <ItemStyle Font-Bold="False" Font-Italic="False" Font-Overline="False"
                                     Font-Strikeout="False" Font-Underline="False" HorizontalAlign="Center"
                                     Wrap="True" />
                             </telerik:GridHyperLinkColumn>
                           </Columns>
                     </MasterTableView>
                 </telerik:RadGrid>

.CS Page

protected void Rad_Grid1_UpdateCommand(object source, GridCommandEventArgs e)
        {
            GridDataItem hyperlinkItem = e.Item as GridDataItem;
            GridEditableItem editedItem = e.Item as GridEditableItem;
            //Get the primary key value using the DataKeyValue.
            string sUniqueID = editedItem.OwnerTableView.DataKeyValues[editedItem.ItemIndex]["UniqueID"].ToString();

            //Access the textbox from the edit form template and store the values in string variables.
            string sContractNo = (editedItem["ContractNo"].Controls[0] as TextBox).Text;
            string sRevisionNo = (editedItem["RevisionNo"].Controls[0] as TextBox).Text;
        }

It is throwing a null pointer error at the following line
string sUniqueID = editedItem.OwnerTableView.DataKeyValues[editedItem.ItemIndex]["UniqueID"].ToString();

Please advise

Regards,
Kaushik