How Can I get Cell Values from Telerik RadGrid - telerik

Question

I am having a problem getting the values from the Radgrid auto generated Insert form.
I have my radgrid setup as shown in code shown below. I am only doing inserts and deletes and am using the edit form that is automatically opened when I click the add new record button.
<div id ="specialrequestGrid" class="container">
<div class="row">
<div class="col-md-12">
<telerik:RadAjaxPanel runat="server">
<telerik:RadGrid ID="SpecialRequests" runat="server" OnInsertCommand="SpecialRequests_InsertCommand"
OnUpdateCommand="SpecialRequests_UpdateCommand"
OnItemCommand="SpecialRequests_ItemCommand"
AllowAutomaticInserts="false"
AutoGenerateColumns="false"
OnNeedDataSource="SpecialRequests_NeedDataSource">
<MasterTableView CommandItemDisplay="Top" DataKeyNames="CaseId_FK, ReqId" Font-Size="Medium" NoMasterRecordsText="No Special Requests">
<CommandItemSettings AddNewRecordImageUrl="../Images/Add.png" />
<Columns>
<telerik:GridTemplateColumn HeaderText="Request Date" UniqueName="DateTemplateColumn">
<ItemTemplate>
<asp:Label ID="DateEditItemTemplate" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Date","{0:MM/dd/yyyy}") %>'>
</asp:Label>
</ItemTemplate>
<EditItemTemplate>
<telerik:RadDatePicker ID="dpRideDate" runat="server" DateInput-DateFormat="MM/dd/yyyy" DbSelectedDate='<%# Bind("Date") %>' MinDate="1999/1/1" UniqueName="dpRideDate">
</telerik:RadDatePicker>
</EditItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn HeaderText="Requested By ID" UniqueName="RequestorTemplateColumn">
<ItemTemplate>
<asp:Label ID="Requestor" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "RequesterEID_FK") %>'>
</asp:Label>
</ItemTemplate>
<EditItemTemplate>
<button id="btnRequestEID" type="button" class="btn" data-toggle="modal" data-target="#myModal" >--Please Select--</button>
<div>
<input type="text" Id="TxtSPRequestName" disabled />
</div>
</EditItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn HeaderText="Request Reason" UniqueName="RequestReason">
<ItemTemplate>
<asp:Label ID="ItemTemplatelblRequestReason" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Reason") %>'>
</asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:Label ID="lblRequestReason" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Reason") %>' Visible="false">
</asp:Label>
<asp:TextBox runat="server" ID="txtReason" Text='<%# DataBinder.Eval(Container.DataItem, "Reason") %>'></asp:TextBox>
</EditItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridCheckBoxColumn DataField="IsWOO" HeaderText="Is Out of Order" UniqueName="ISWOO"></telerik:GridCheckBoxColumn>
</Columns>
</MasterTableView>
</telerik:RadGrid>
</telerik:RadAjaxPanel>
</div>
</div>
</div>
This is the screenshot of the auto generated form I get when I click the add new record
When I click the Insert link on the form I run this C# code
protected void SpecialRequests_InsertCommand(object sender, GridCommandEventArgs e)
{
GridEditableItem editedItem = e.Item as GridEditableItem;
UserControl userControl = (UserControl)e.Item.FindControl(GridEditFormItem.EditFormUserControlID);
T_SpecialRequests t = new T_SpecialRequests();
t.IsWOO = (userControl.FindControl("IsWOO") as CheckBox).Checked;
}
Note the IsWOO is a control in the Radgrid that I did not show in the Screenshot. When I click the save link the Insert Function, shown above Runs but I get the following error:
Unhandled exception at line 1, column 123034 in http://localhost:52028/bundles/MsAjaxJs?v=c42ygB2U07n37m_Sfa8ZbLGVu4Rr2gsBo7MvUEnJeZ81
0x800a139e - JavaScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: Object reference not set to an instance of an object.
The strange part is I use this same code in several other projects without any problems. The only difference is this is the first time I have used this auto generated form. I don't want to use the another type of control for this Radgrid due to such a small number of fields, only have 4 control.
I have spent several hours searching for an answer but just can't find the solution.
How can I get the values from this auto generated form?

Answer 1

You can use
t.IsWOO = (editedItem["ISWOO"].Controls[0] as CheckBox).Checked;
or
var newValues = new Dictionary<string, object>();
e.Item.OwnerTableView.ExtractValuesFromItem(newValues, editedItem);
t.IsWOO = (bool)newValues["IsWOO"];
The first approach references the control by index because unfortunately it has no ID.
The second one is a bit verbose for just one property but I would surely prefer it if there were more properties.

Answer 2

While #Michal Nawrocik was correct I found that I still had some problems reading all of the controls in the Radgrid. I was able to track down the answer on the Telerik forum and found that you have to use different code based on the Column Type. I had 2 different type of columns.
the code below shows what I used to get all of the control values on the form
protected void SpecialRequests_InsertCommand(object sender, GridCommandEventArgs e)
{
try
{
using(LatentEntities db = new LatentEntities())
{
if (e.Item is GridEditableItem)
{
T_SpecialRequests T = new T_SpecialRequests();
var editableItem = ((GridEditableItem)e.Item);
RadDatePicker picker = (RadDatePicker)editableItem.FindControl("dpDate"); // in EditItem Template
DateTime dt = Convert.ToDateTime(picker.DbSelectedDate);
T.Date = dt;
TextBox Reason = (TextBox)editableItem.FindControl("txtReason"); //This Control was in an Edit Item Template
T.Reason = Reason.Text;
T.IsWOO = (editableItem["ISWOO"].Controls[0] as CheckBox).Checked; //In CheckBox Column
}
}
And if the control is in a Telerik:GridtboundColumn I used this code:
string strFirstName = (editableItem["firstname"].Controls[0] as TextBox).Text;