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How to change and get value from a dropdownlist in a RadGrid column?

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DanYeung
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DanYeung asked on 08 Jul 2016, 03:20 PM

I am using a RadGrid and have some controls in columns. A DropDownList  is in ItemTemplate (see code below). For example, when the grid was first bind with a dataset, "HI" was selected. I changed the selection to "AZ" and click another control in another column to call the Javascript function "showCityList" (see code below). Then I use Google F12 to step into the function. I have two questions.

1. I can see the var cell that has all states in the dropdownlist and "HI" is selected. <option selected="selected" value="HI">HI</option>. I changed the selection to "AZ". Why the initial state was still be selected?

2. How do I get the selected state? Please provide the syntax. 

I CANNOT use OnSelectedIndexChanged and it is a long story to explain.  

<telerik:GridTemplateColumn HeaderText=" State" SortExpression="State_Code" UniqueName="State_Code">
  <ItemTemplate>
    <asp:DropDownList ID="cboState" Width="105px" CssClass="State_Code" runat="server" ></asp:DropDownList>
  </ItemTemplate>
</telerik:GridTemplateColumn>

 

function showCityList() {
                var row = Telerik.Web.UI.Grid.GetFirstParentByTagName(button, "tr");
                var rowIndex = row.id.split("__")[1];
                                
                debugger; 
                var MasterTable = $find("<%=gridSites.ClientID%>").get_masterTableView();
                var selectedRows = MasterTable.get_dataItems();
                if (selectedRows != null)
                {
                    var row = selectedRows[rowIndex];
                    var cell = MasterTable.getCellByColumnUniqueName(row, "State_Code")
               }
             return false;
}

 

Thanks.

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Eyup
Telerik team
answered on 13 Jul 2016, 06:40 AM
Hello DanYeung,

Generally, you can use the $telerik.findControl or findElement methods. You can examine the RadGridEditComboClientHideModified.zip web site sample provided in the following post for a similar implementation:
http://www.telerik.com/forums/find-control-in-insert-item-grid-client-side#2tgx6AugyU6c562P--mIIg


If you are using using EditForms or PopUp mode, the correct way to get the container edit form is using the following method:
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for (var i = 0; i < editItems.length; i++) {
    setHiddenFieldIds(editItems[i].get_editFormItem());
}
...
function selectedIndexChanged(sender, args, index, tableViewID) {
    var tableView = $find(tableViewID);
    var editForm = index >= 0 ? tableView.get_dataItems()[index].get_editFormItem() : tableView.get_insertItem();
    setHiddenFieldIds(editForm);
}

I hope this will prove helpful.


Regards,
Eyup
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Kiran
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answered on 24 Apr 2019, 03:49 PM

Can you please provide sample code for this?

I have a radcombobox inside itemtemplate of gridtemplatecolumn of a radgrid. On slectedindexchanged event I want to update record by grabbing few values from other columns of the same record. 

 

Thank you.

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Kiran
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answered on 24 Apr 2019, 03:55 PM

I figured this out. If anyone is trying to access radgrid other column values in radcombobox selectedindexchanged via radcombox within radgrid in the item template, see the following:

 

Protected Sub radLocID_SelectedIndexChanged(sender As Object, e As RadComboBoxSelectedIndexChangedEventArgs)

        Dim cmbLocId As RadComboBox = CType(sender, RadComboBox)
        Dim item As GridDataItem = CType(cmbLocId.NamingContainer, GridDataItem)
        Dim strLocID As String = (TryCast(sender, RadComboBox)).SelectedValue

        Dim strSYSID As String = item.GetDataKeyValue("IB_MAIN_ID").ToString



    End Sub

 

 

strLocID is the value that comes from radcombox within the radgrid but I also want the value of IB_MAIN_ID which is in another column. 

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Eyup
Telerik team
answered on 29 Apr 2019, 07:47 AM
Hi Kiran,

Thank you for sharing your specific approach with our community. I hope it will prove to other developers as well.

Regards,
Eyup
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Kiran
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