how to Call telerik controls inside a template in the code - vb.net

Question

This is my Radgrid and I am trying to call contact type, projectid and ContactName in the .vb code. Please help me obtain it.
As the entire design is under template I was not sure how we access the RadDropDownList, texboxes and ETC.
<telerik:RadGrid ID="RadGrid1" runat="server" DataSourceID="SqlDataSource1" PageSize="50" Width="99%" OnItemUpdated="RadGrid1_ItemUpdated" OnItemInserted="RadGrid1_ItemInserted" OnItemDeleted="RadGrid1_ItemDeleted"
AutoGenerateColumns="False" AutoGenerateEditColumn="True" AutoGenerateDeleteColumn="True" AllowAutomaticInserts="True" AllowAutomaticUpdates="True" AllowAutomaticDeletes="True" OnDataBound="RadGrid1_DataBound">
<MasterTableView DataSourceID="SqlDataSource1" CommandItemDisplay="Top" DataKeyNames="ProjectID,ContactType">
<ItemStyle HorizontalAlign="Center" />
<HeaderStyle HorizontalAlign="Center" Wrap="true" />
<EditItemStyle HorizontalAlign="Left" />
<Columns>
<telerik:GridBoundColumn DataField="ProjectID" UniqueName="ProjectID" FilterControlAltText="Filter ProjectID column" HeaderText="ProjectID" ReadOnly="True" SortExpression="ProjectID" Display="false">
<ColumnValidationSettings>
<ModelErrorMessage Text=""></ModelErrorMessage>
</ColumnValidationSettings>
</telerik:GridBoundColumn>
<telerik:GridTemplateColumn DataField="ContactType" HeaderText="Contact Type">
<ItemTemplate>
<asp:Label Text='<%# Eval("ContactTypeDesc")%>' runat="server" />
</ItemTemplate>
<InsertItemTemplate>
<telerik:RadDropDownList ID="ddlContactType" runat="server" DropDownWidth="100%" SelectedValue='<%# Bind("ContactType") %>' DataSourceID="SqlDataSource2" DataValueField="ContactTypeID" DataTextField="ContactTypeDesc" />
<br />
<asp:RequiredFieldValidator Display="Dynamic" ErrorMessage="* Required Field" ForeColor="Red" ControlToValidate="ddlContactType" runat="server" />
</InsertItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn DataField="ContactName" HeaderText="Contact Name" SortExpression="ContactName" UniqueName="ContactName" FilterControlAltText="Filter ContactName column">
<ItemTemplate>
<asp:Label Text='<%# Eval("ContactName")%>' runat="server" />
</ItemTemplate>
<EditItemTemplate>
<telerik:RadTextBox ID="txtName" runat="server" Text='<%# Bind("ContactName")%>' MaxLength="100"></telerik:RadTextBox><br />
<asp:RequiredFieldValidator Display="Dynamic" ErrorMessage="* Required Field" ForeColor="Red" ControlToValidate="txtName" runat="server" />
</EditItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn DataField="ContactEmailAddress" HeaderText="Contact Email">
<ItemTemplate>
<asp:Label Text='<%# Eval("ContactEmailAddress")%>' runat="server" />
</ItemTemplate>
<EditItemTemplate>
<telerik:RadTextBox ID="txtEmail" runat="server" Text='<%# Bind("ContactEmailAddress")%>' MaxLength="100"></telerik:RadTextBox><br />
<asp:RegularExpressionValidator ID="emailValidator" runat="server" Display="Dynamic" ForeColor="Red"
ErrorMessage="Please, enter valid e-mail address." ValidationExpression="^[\w\.\-]+#[a-zA-Z0-9\-]+(\.[a-zA-Z0-9\-]{1,})*(\.[a-zA-Z]{2,3}){1,2}$"
ControlToValidate="txtEmail">
</asp:RegularExpressionValidator>
<asp:RequiredFieldValidator Display="Dynamic" ErrorMessage="* Required Field" ForeColor="Red" ControlToValidate="txtEmail" runat="server" />
</EditItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn DataField="ContactInternationalNumber" HeaderText="International Code">
<ItemTemplate>
<asp:Label Text='<%# String.Format("+{0}", Eval("ContactInternationalNumber"))%>' runat="server" />
</ItemTemplate>
<EditItemTemplate>
<telerik:RadDropDownList ID="ddlCountryCodes" runat="server" DropDownHeight="150px" DropDownWidth="100%" SelectedValue='<%# Bind("ContactInternationalNumber")%>' DataSourceID="SqlDataSource3" DataValueField="CountryCode" DataTextField="Country" />
<br />
<asp:RequiredFieldValidator Display="Dynamic" ErrorMessage="* Required Field" ForeColor="Red" ControlToValidate="ddlCountryCodes" runat="server" />
</EditItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn DataField="ContactPhoneNumber" HeaderText="Contact Phone">
<ItemTemplate>
<asp:Label Text='<%# Eval("ContactPhoneNumber")%>' runat="server" />
</ItemTemplate>
<EditItemTemplate>
<telerik:RadTextBox ID="txtPhoneNumber" runat="server" MaxLength="100" Text='<%# Bind("ContactPhoneNumber")%>' /><br />
<%--<telerik:RadMaskedTextBox ID="radMskTxtPhoneNumber" runat="server" SelectionOnFocus="SelectAll" PromptChar="_" Mask="(###) ###-####" Text='<%# Bind("ContactPhoneNumber")%>' />--%>
<asp:RequiredFieldValidator Display="Dynamic" ErrorMessage="* Required Field" ForeColor="Red" ControlToValidate="txtPhoneNumber" runat="server" />
</EditItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridBoundColumn DataField="CreatedBy" HeaderText="Created By" ReadOnly="true" SortExpression="CreatedBy" UniqueName="CreatedBy" FilterControlAltText="Filter CreatedBy column">
<ColumnValidationSettings>
<ModelErrorMessage Text=""></ModelErrorMessage>
</ColumnValidationSettings>
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="CreateDate" HeaderText="Create Date" DataFormatString="{0:MM-dd-yyyy}" ReadOnly="true" SortExpression="CreateDate" UniqueName="CreateDate" FilterControlAltText="Filter CreateDate column" DataType="System.DateTime">
<ColumnValidationSettings>
<ModelErrorMessage Text=""></ModelErrorMessage>
</ColumnValidationSettings>
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="LastModifiedBy" HeaderText="Last Modified By" ReadOnly="true" SortExpression="LastModifiedBy" UniqueName="LastModifiedBy" FilterControlAltText="Filter LastModifiedBy column">
<ColumnValidationSettings>
<ModelErrorMessage Text=""></ModelErrorMessage>
</ColumnValidationSettings>
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="LastModifiedDate" HeaderText="Last Modified Date" ReadOnly="true" DataFormatString="{0:MM-dd-yyyy}" SortExpression="LastModifiedDate" UniqueName="LastModifiedDate" FilterControlAltText="Filter LastModifiedDate column" DataType="System.DateTime">
<ColumnValidationSettings>
<ModelErrorMessage Text=""></ModelErrorMessage>
</ColumnValidationSettings>
</telerik:GridBoundColumn>
</Columns>
</MasterTableView>
</telerik:RadGrid>

Answer 1

Please try with the below code snippet.
Protected Sub RadGrid1_ItemInserted(source As Object, e As GridInsertedEventArgs)
Dim editformItem As GridEditFormInsertItem = DirectCast(e.Item, GridEditFormInsertItem)
Dim txtName As RadTextBox = DirectCast(editformItem.FindControl("txtName"), RadTextBox)
Dim ddlContactType As RadDropDownList = DirectCast(editformItem.FindControl("ddlContactType"), RadDropDownList)
' You can access textbox and dropdownlist here
End Sub
OR
Protected Sub RadGrid1_ItemInserted(source As Object, e As GridInsertedEventArgs)
Dim editformItem As GridEditableItem = DirectCast(e.Item, GridEditableItem)
Dim txtName As RadTextBox = DirectCast(editformItem.FindControl("txtName"), RadTextBox)
Dim ddlContactType As RadDropDownList = DirectCast(editformItem.FindControl("ddlContactType"), RadDropDownList)
' You can access textbox and dropdownlist here
End Sub
Let me know if any concern.