can not get the DataItem of SelectedItems.

[James]

          protected void RadButtonSave_Click(object sender, EventArgs e)
        {
            foreach (GridItem item in RadGrid1.Items)
            {
                item.DataItem // this is null
            }

            foreach (GridItem item in this.RadGrid1.SelectedItems) //get SelectedItems successfully
            {
                 but item.DataItem is null
            }
        }

can not get the DataItem of SelectedItems.

[Princy]

Hi,

Please try the following code snippet.

C#:

protected void RadButtonSave_Click(object sender, EventArgs e)
{
    foreach (GridDataItem item in RadGrid1.Items)
        {
            //your code
        }

    foreach (GridDataItem item in this.RadGrid1.SelectedItems)
        {
            //your code
        }
}

Thanks,
Princy.

[James]

Hi Princy,

It doesn't work also.

[Princy]

Hi,

Unfortunately I couldn't replicate any issue at my end. Here is the complete code I tried.

ASPX:

<telerik:RadGrid ID="RadGrid1" DataSourceID="SqlDataSource2" AutoGenerateColumns="false"
    runat="server">
    <MasterTableView>
        <Columns>
            <telerik:GridBoundColumn DataField="OrderID" UniqueName="OrderID">
            </telerik:GridBoundColumn>
        </Columns>
    </MasterTableView>
    <ClientSettings Selecting-AllowRowSelect="true">
    </ClientSettings>
</telerik:RadGrid>
<telerik:RadButton ID="Button1" runat="server" OnClick="Button1_Click" />
<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString3 %>"
    SelectCommand="select top 10  * from [Orders]"></asp:SqlDataSource>

C#:

protected void Button1_Click(object sender, EventArgs e)
{
    foreach (GridDataItem item in RadGrid1.Items)
    {
        string value1 = item["OrderID"].Text;
    }

    foreach (GridDataItem item in this.RadGrid1.SelectedItems)
    {
        string value2 = item["OrderID"].Text;
    }
}

Please elaborate the scenario if it doesn't help.

Thanks,
Princy.

[Vijay]

Hi James, 

I ran into a similar problem but only after upgrading to the latest Q1 2013 release. For me, I was unable to access the dataItem for hidden columns (visible="false").

After reading the following post about breaking changes, I changed my hidden columns to use display="false" instead of visible="false" and am now able to access the dataItem values like I used to.

http://www.telerik.com/community/forums/aspnet-ajax/grid/breaking-change-hidden-column-cell-text-is-not-persisted-in-viewstate.aspx

Hope this helps,

Vijay
 

[Jose]

Excellent contribution, I had been giving it for a while because I did not bring the data after updating the telerik.
Thanks a lot.

[Andrey]

Hello,

The DataItem property is only initialized during the databinding events like the ItemDataBound event. In any other event the DataItem property will return null.

Try to modify your code as follows and you should succeed:

protected void RadButtonSave_Click(object sender, EventArgs e)
{
    RadGrid1.DataSource = null;
    RadGrid1.Rebind();
}

protected void RadGrid1_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)
{
    if (e.Item is GridDataItem)
    {
        GridDataItem dataItem = e.Item as GridDataItem;
        //dataItem.DataItem now will hold the datasource data
    }
}

Kind regards,
Andrey
the Telerik team

[PPRINC]

Hello Dear,

I am facing an issue.

After upgrading from telerik v2009  to  telerk v2012 , I can't get my selected rows values in a radgrid with checkboxes from code behind

here is the code in the markup

<telerik:RadGrid ID="RadGrid1" runat="server" AllowPaging="True"
                          PageSize="5"     Width="100%"    OnPageIndexChanged="RadGrid1_PageIndexChanged"
                            GridLines="None" Skin="Vista" AllowMultiRowSelection="True"  >
                            <MasterTableView >
                            <Columns>
                                <telerik:GridClientSelectColumn UniqueName="ClientSelectColumn" ></telerik:GridClientSelectColumn>
                            </Columns>
                                <RowIndicatorColumn>
                                    <HeaderStyle Width="20px" />
                                </RowIndicatorColumn>
                                <ExpandCollapseColumn>
                                    <HeaderStyle Width="20px" />
                                </ExpandCollapseColumn>
                                <PagerStyle Mode="NextPrev" />
                            </MasterTableView>
                            <HeaderStyle Font-Bold="True" Font-Italic="False" Font-Overline="False"
                                Font-Strikeout="False" Font-Underline="False" Wrap="True" />
                            <ClientSettings EnableRowHoverStyle="true"  >
                                <Selecting AllowRowSelect="True" UseClientSelectColumnOnly = "true"   />
                            </ClientSettings>
                        </telerik:RadGrid>

and now the code behind

 protected void  Ok_Click(object sender, System.EventArgs e)
        {
foreach (GridDataItem item in RadGrid1.SelectedItems)

               {

                   CheckBox chk = (CheckBox)item["ClientSelectColumn"].Controls[0];

                   id = item["ID"].Text; // get the id with its column name

                   name = item["NAME"].Text; // get the name with its column name

                   chec = chk.Checked;

 

 

               }
}

It doesn't even enter in the loop.
What can I do to resolve it ?

Thank in advance for your assistance

[Andrey]

Hi,

Could you share your full page source code along with the code-behind file content? Thus all the people who want to help you will have better understanding of your case.

Regards,
Andrey
Telerik

[PPRINC]

Aleardy found!

As i'm using master pages, I just needed to ad add a radAjaxManager on my master page and a radAjaxManagerProxy on the content page to get it fixed. and that's done.

Thanks anyway,

Regards.