Nesting the DropDownList to Gridview in ASP.NET 2.0 to update

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Introduction

In this article I will demonstrate how to Nest the DropDownList to Gridview in asp.net 2.0 to update data.ITemplate will need to be created that can be used for representing and editing the data within the Gridview . i use a label in the ItemTemplate to represent the City column and a DropDownList in the EditItemTemplate to edit it .

Background

When i use Gridview i ask myself can i Nest DropDownList to Gridview to update data,now i make it ,i share this pleasure with everyone!

Step By Step

1、 Binding Data to Gridview from SqlDataSource1，DataSource is (Northwind--Customers[CustomerID、CompanyName、City、ContactName])，i add a new table City[CityId,City] into the Northwind.as shown below: 2、Add one TemplateField column to the GridView,add a label in the ItemTemplate field and Design as shown below: 3.1、now add a DropDownList in the EditItemTemplate field and Set its DataSource to SqlDataSource2(Northwind--City[City]).shown below: 3.2、and click "choose data source..." Configure it as shown below4: 3.3、and click "Edit DataBindings..." Configure it as shown below5: 4、the complete code of Default2.aspx see DataBind.zip.

Using the code

Configure SqlDataSource1 like this:

SelectCommand="SELECT [CustomerID], [CompanyName], [City], [ContactName] FROM [Customers]"
UpdateCommand="UPDATE [Customers] SET [CompanyName] = @CompanyName, [City] = @City, [ContactName] = @ContactName WHERE [CustomerID] = @CustomerID">

Configure SqlDataSource2 like this:

<asp:SqlDataSource ID="SqlDataSource2"  runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
SelectCommand="SELECT [City] FROM [City]">
                         </asp:SqlDataSource>

Configure DropDownList like this:

DropDownList ID="DropDownList1" runat="server" Width="104px"  SelectedValue='<%# Bind ("City") %>' DataSourceID="SqlDataSource2" DataTextField="City" DataValueField="City"

Remember to add a new table City[CityId,City] into the Northwind by yourself.

Points of Interest

By the way,i complete this case without writing a line code. the vs.net2005 Generat the code Automaticly.

History

This is my first Article in codeproject!