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PODynamicaly populate Label under Asp .net Formview Control
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  1. PODynamicaly populate Label under Asp .net Formview Control
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    copied!<p>This Asp.net page which has FormView Control.I am populating the FormView control by Nortwind database product table.But i wanted to populate a label dynamicaly inside the formview control.so the designer .cs file will not updated with the label .Also attached the Code behind.I tried with FindControl.but it always gives me Null Exception.</p> <p>Codebehind file</p> <pre><code>protected void DataBound(object sender, EventArgs e) { if (ProductsFormView.CurrentMode == FormViewMode.Insert) { TextBox ProductNameTextBox = ProductsFormView.FindControl("ProductNameTextBox1") as TextBox; ProductNameTextBox.Text = "Hello"; Label lblSubmit = ProductsFormView.FindControl("lblSubmit") as Label; lblSubmit.Text = "HI"; } } </code></pre> <p><strong>Aspx.page</strong></p> <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml" &gt; &lt;head id="Head1" runat="server"&gt; &lt;title&gt;FormView Example&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;form id="form1" runat="server"&gt; &lt;h3&gt;FormView Example&lt;/h3&gt; &lt;table cellspacing="10"&gt; &lt;tr&gt; &lt;td valign="top"&gt; &lt;asp:FormView ID="ProductsFormView" DataSourceID="ProductsSqlDataSource" AllowPaging="True" DefaultMode="Insert" runat="server" DataKeyNames="ProductID" OnDataBound="DataBound"&gt; &lt;EditItemTemplate&gt; ProductID: &lt;asp:Label ID="ProductIDLabel1" runat="server" Text='&lt;%# Eval("ProductID") %&gt;' /&gt; &lt;br /&gt; ProductName: &lt;asp:TextBox ID="ProductNameTextBox" runat="server" Text='&lt;%# Bind("ProductName") %&gt;' /&gt; &lt;br /&gt; CategoryID: &lt;asp:TextBox ID="CategoryIDTextBox" runat="server" Text='&lt;%# Bind("CategoryID") %&gt;' /&gt; &lt;br /&gt; QuantityPerUnit: &lt;asp:TextBox ID="QuantityPerUnitTextBox" runat="server" Text='&lt;%# Bind("QuantityPerUnit") %&gt;' /&gt; &lt;br /&gt; UnitPrice: &lt;asp:TextBox ID="UnitPriceTextBox" runat="server" Text='&lt;%# Bind("UnitPrice") %&gt;' /&gt; &lt;br /&gt; &lt;asp:TextBox ID="ProductNameTextBox1" runat="server"&gt;&lt;/asp:TextBox&gt; &lt;asp:LinkButton ID="UpdateButton" runat="server" CausesValidation="True" CommandName="Update" Text="Update" /&gt; &amp;nbsp;&lt;asp:LinkButton ID="UpdateCancelButton" runat="server" CausesValidation="False" CommandName="Cancel" Text="Cancel" /&gt; &lt;asp:Label ID="lblSubmit" runat="server" Text=" "&gt;&lt;/asp:Label&gt; &lt;/EditItemTemplate&gt; &lt;HeaderStyle forecolor="white" backcolor="Blue" /&gt; &lt;InsertItemTemplate&gt; ProductName: &lt;asp:TextBox ID="ProductNameTextBox" runat="server" Text='&lt;%# Bind("ProductName") %&gt;' /&gt; &lt;br /&gt; CategoryID: &lt;asp:TextBox ID="CategoryIDTextBox" runat="server" Text='&lt;%# Bind("CategoryID") %&gt;' /&gt; &lt;br /&gt; QuantityPerUnit: &lt;asp:TextBox ID="QuantityPerUnitTextBox" runat="server" Text='&lt;%# Bind("QuantityPerUnit") %&gt;' /&gt; &lt;br /&gt; UnitPrice: &lt;asp:TextBox ID="UnitPriceTextBox" runat="server" Text='&lt;%# Bind("UnitPrice") %&gt;' /&gt; &lt;br /&gt; &lt;asp:LinkButton ID="InsertButton" runat="server" CausesValidation="True" CommandName="Insert" Text="Insert" /&gt; &amp;nbsp;&lt;asp:LinkButton ID="InsertCancelButton" runat="server" CausesValidation="False" CommandName="Cancel" Text="Cancel" /&gt; &lt;/InsertItemTemplate&gt; &lt;ItemTemplate&gt; ProductID: &lt;asp:Label ID="ProductIDLabel" runat="server" Text='&lt;%# Eval("ProductID") %&gt;' /&gt; &lt;br /&gt; ProductName: &lt;asp:Label ID="ProductNameLabel" runat="server" Text='&lt;%# Bind("ProductName") %&gt;' /&gt; &lt;br /&gt; CategoryID: &lt;asp:Label ID="CategoryIDLabel" runat="server" Text='&lt;%# Bind("CategoryID") %&gt;' /&gt; &lt;br /&gt; QuantityPerUnit: &lt;asp:Label ID="QuantityPerUnitLabel" runat="server" Text='&lt;%# Bind("QuantityPerUnit") %&gt;' /&gt; &lt;br /&gt; UnitPrice: &lt;asp:Label ID="UnitPriceLabel" runat="server" Text='&lt;%# Bind("UnitPrice") %&gt;' /&gt; &lt;br /&gt; &lt;/ItemTemplate&gt; &lt;PagerTemplate&gt; &lt;table&gt; &lt;tr&gt; &lt;td&gt;&lt;asp:LinkButton ID="FirstButton" CommandName="Page" CommandArgument="First" Text="&lt;&lt;" RunAt="server"/&gt;&lt;/td&gt; &lt;td&gt;&lt;asp:LinkButton ID="PrevButton" CommandName="Page" CommandArgument="Prev" Text="&lt;" RunAt="server"/&gt;&lt;/td&gt; &lt;td&gt;&lt;asp:LinkButton ID="NextButton" CommandName="Page" CommandArgument="Next" Text="&gt;" RunAt="server"/&gt;&lt;/td&gt; &lt;td&gt;&lt;asp:LinkButton ID="LastButton" CommandName="Page" CommandArgument="Last" Text="&gt;&gt;" RunAt="server"/&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/PagerTemplate&gt; &lt;/asp:FormView&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;asp:SqlDataSource ID="ProductsSqlDataSource" SelectCommand="SELECT [ProductID], [ProductName], [CategoryID], [QuantityPerUnit], [UnitPrice] FROM [Products]" connectionstring="&lt;%$ ConnectionStrings:NorthwindConnectionString %&gt;" RunAt="server"/&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
 

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