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‎controls/formdecorator/troubleshooting/decorated-gridview-is-not-bound-to-sqldatasource-with-controlparameter .md‎

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---
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title: Decorated GridView Is Not Bound to SqlDataSource with ControlParameter
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page_title: Decorated GridView Is Not Bound to SqlDataSource with ControlParameter | RadFormDecorator for ASP.NET AJAX Documentation
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description: Decorated GridView Is Not Bound to SqlDataSource with ControlParameter
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slug: formdecorator/troubleshooting/decorated-gridview-is-not-bound-to-sqldatasource-with-controlparameter
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tags: decorated,gridview,is,not,bound,to,sqldatasource,with,controlparameter
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published: True
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position: 2
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---
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# Decorated GridView Is Not Bound to SqlDataSource with ControlParameter
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This help article offers a solution to an issue where a decorated asp:GridView by RadFormDecorator cannot be bound to the SqlDataSource with a ControlParameter on initial page load.
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**Problem:**
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The asp:GridView cannot be bound on initial page load when it is decorated by RadFormDecorator and the GridView is bound to the SqlDataSource with a ControlParameter. **Example 1** shows how to reproduce the issue.
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>caption **Example 1**: Decorated asp:GridView is not visible on initial page load when it is bound to the SqlDataSource with ControlParameter.
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**ASP.NET**
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<telerik:RadFormDecorator ID="RadFormDecorator1" runat="server" DecoratedControls="All" />
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<asp:DropDownList ID="Dropdownlist1" runat="server" DataSourceID="DropDownListDataSource" AutoPostBack="true" DataTextField="CompanyName" DataValueField="CustomerID">
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</asp:DropDownList>
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<asp:SqlDataSource runat="server" ID="DropDownListDataSource" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
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ProviderName="System.Data.SqlClient" SelectCommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
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OldValuesParameterFormatString="original_{0}" ConflictDetection="CompareAllValues" />
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<asp:GridView ID="GridView1" runat="server" AllowPaging="True" DataKeyNames="OrderID" DefaultMode="ReadOnly"
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DataSourceID="GridViewDataSource" Width="300" Style="float: left;">
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</asp:GridView>
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<asp:SqlDataSource runat="server" ID="GridViewDataSource" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
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ProviderName="System.Data.SqlClient" SelectCommand="SELECT [OrderID], [CustomerID], [EmployeeID],[OrderDate] FROM [Orders] WHERE ([CustomerID] = @CustomerID)"
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OldValuesParameterFormatString="original_{0}" ConflictDetection="CompareAllValues">
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<SelectParameters>
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<asp:ControlParameter ControlID="Dropdownlist1" Name="CustomerID" PropertyName="SelectedValue"
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Type="String"></asp:ControlParameter>
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</SelectParameters>
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</asp:SqlDataSource>
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**Cause:**
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In order to decorate all of the controls on the page, the RadFormDecorator decorates the children controls of the complex controls as well (i.e., the RadFormDecorator iterates through the controls' collections).
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There is, however, a binding issue with the GridView when the SqlDataSource is used with a ControlParameter and at the same time, the GridView's collection is accessed from the code behind. This issue can be easily reproduced on a page with no Telerik UI for ASP.NET AJAX controls and is shown in **Example 2**. The problem also affects the scenario with the RadFormDecorator from **Example 1**.
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>caption **Example 2**: asp:GridView cannot be bound to the SqlDataSource with a ControlParameter when the GridView's collection is accessed from the code behind.
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**ASP.NET**
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<asp:DropDownList ID="Dropdownlist1" runat="server" DataSourceID="DropDownListDataSource" AutoPostBack="true" DataTextField="CompanyName" DataValueField="CustomerID">
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</asp:DropDownList>
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<asp:SqlDataSource runat="server" ID="DropDownListDataSource" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
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ProviderName="System.Data.SqlClient" SelectCommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
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OldValuesParameterFormatString="original_{0}" ConflictDetection="CompareAllValues" />
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<asp:GridView ID="GridView1" runat="server" AllowPaging="True" DataKeyNames="OrderID" DefaultMode="ReadOnly"
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DataSourceID="GridViewDataSource" Width="300" Style="float: left;">
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</asp:GridView>
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<asp:SqlDataSource runat="server" ID="GridViewDataSource" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
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ProviderName="System.Data.SqlClient" SelectCommand="SELECT [OrderID], [CustomerID], [EmployeeID],[OrderDate] FROM [Orders] WHERE ([CustomerID] = @CustomerID)"
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OldValuesParameterFormatString="original_{0}" ConflictDetection="CompareAllValues">
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<SelectParameters>
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<asp:ControlParameter ControlID="Dropdownlist1" Name="CustomerID" PropertyName="SelectedValue"
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Type="String"></asp:ControlParameter>
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</SelectParameters>
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</asp:SqlDataSource>
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**C#**
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protected void Page_PreRender(object sender, EventArgs e)
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{
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var c = GridView1.Controls;
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}
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**VB**
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Protected Sub Page_PreRender(sender As Object, e As EventArgs)
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Dim c = GridView1.Controls
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End Sub
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**Solution:**
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There are a few options you can choose from in order to handle the scenario described above.
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* Bind the DropDownList's data from the code behind instead of declaring the DataSourceID property of the DropDownList.
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>caption **Example 3**: Binding DropDownList's data from the code behind instead of declaring its DataSourceID property.
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**ASP.NET**
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<telerik:RadFormDecorator ID="RadFormDecorator1" runat="server" DecoratedControls="All" />
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<asp:DropDownList ID="Dropdownlist1" runat="server" AutoPostBack="true" DataTextField="CompanyName" DataValueField="CustomerID">
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</asp:DropDownList>
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<asp:SqlDataSource runat="server" ID="DropDownListDataSource" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
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ProviderName="System.Data.SqlClient" SelectCommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
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OldValuesParameterFormatString="original_{0}" ConflictDetection="CompareAllValues" />
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<asp:GridView ID="GridView1" runat="server" AllowPaging="True" DataKeyNames="OrderID" DefaultMode="ReadOnly"
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DataSourceID="GridViewDataSource" Width="300" Style="float: left;">
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</asp:GridView>
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<asp:SqlDataSource runat="server" ID="GridViewDataSource" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
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ProviderName="System.Data.SqlClient" SelectCommand="SELECT [OrderID], [CustomerID], [EmployeeID],[OrderDate] FROM [Orders] WHERE ([CustomerID] = @CustomerID)"
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OldValuesParameterFormatString="original_{0}" ConflictDetection="CompareAllValues">
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<SelectParameters>
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<asp:ControlParameter ControlID="Dropdownlist1" Name="CustomerID" PropertyName="SelectedValue"
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Type="String"></asp:ControlParameter>
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</SelectParameters>
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</asp:SqlDataSource>
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**C#**
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protected void Page_Init(object sender, EventArgs e)
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{
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DataSourceSelectArguments args = new DataSourceSelectArguments();
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DataView view = (DataView)DropDownListDataSource.Select(args);
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DataTable dt = view.ToTable();
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Dropdownlist1.DataSource = dt;
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Dropdownlist1.DataBind();
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}
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**VB**
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Protected Sub Page_Init(sender As Object, e As EventArgs)
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Dim args As New DataSourceSelectArguments()
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Dim view As DataView = DirectCast(DropDownListDataSource.[Select](args), DataView)
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Dim dt As DataTable = view.ToTable()
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Dropdownlist1.DataSource = dt
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Dropdownlist1.DataBind()
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End Sub
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* Skip the following controls form decoration - GridFormDetailsViews, LoginControls, Textbox and ValidationSummary:
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>caption **Example 4**: Skip the GridFormDetailsViews, LoginControls, Textbox and ValidationSummary controls from decoration.
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**ASP.NET**
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<telerik:RadFormDecorator ID="RadFormDecorator1" runat="server" ControlsToSkip="GridFormDetailsViews,LoginControls,Textbox,ValidationSummary" />
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* Set the DataSourceID property of the DropDownList in the Page_Init event. This approach, however, will force the DropDownList to rebind itself, which may lead to performance issues for large data sources.
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**C#**
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protected void Page_Init(object sender, EventArgs e)
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{
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Dropdownlist1.DataSourceID = "DropDownListDataSource";
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Dropdownlist1.DataBind();
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}
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**VB**
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Protected Sub Page_Init(sender As Object, e As EventArgs)
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Dropdownlist1.DataSourceID = "DropDownListDataSource"
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Dropdownlist1.DataBind()
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End Sub
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# See Also
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* [RadFormDecorator Input Appearance Is Not Updated When Disabled In Internet Explorer]({%slug formdecorator/troubleshooting/input-appearance-is-not-updated-when-disabled-in-internet-explorer%})
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* [RadFormDecorator Integration With RadControls]({%slug formdecorator/integration-with-radcontrols%})
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* [RadFormDecorator Integration With Standard Controls]({%slug formdecorator/integration-with-standard-controls%})
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* [RadFormDecorator Overview]({%slug formdecorator/overview%})

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