Displaying Nested Master/Details Forms


<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<script runat="server">

    protected void grdProductCategories_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            int categoryId = (int)DataBinder.Eval(e.Row.DataItem,"Id");
            SqlDataSource srcProducts = (SqlDataSource)e.Row.FindControl("srcProducts");
            srcProducts.SelectParameters["CategoryId"].DefaultValue = categoryId.ToString();
        }
    }

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<body>
    <form id="form1" runat="server">
    <div>

    <asp:GridView
        id="grdProducts"
        DataSourceID="srcProductCategories"
        OnRowDataBound="grdProductCategories_RowDataBound"
        AutoGenerateColumns="false"
        CssClass="categories"
        ShowHeader="false"
        GridLines="none"
        Runat="server">
        <Columns>
        <asp:TemplateField>
        <ItemTemplate>
            <h1><%# Eval("Name") %></h1>
            <asp:GridView
                id="grdProducts"
                DataSourceId="srcProducts"
                CssClass="Products"
                GridLines="none"
                Runat="server" />

            <asp:SqlDataSource
                id="srcProducts"
                ConnectionString="<%$ ConnectionStrings:Products %>"
                SelectCommand="SELECT Title,Director FROM Products
                    WHERE CategoryId=@CategoryId"
                Runat="server">
                <SelectParameters>
                    <asp:Parameter Name="CategoryId" />
                </SelectParameters>
            </asp:SqlDataSource>
        </ItemTemplate>
        </asp:TemplateField>
        </Columns>
    </asp:GridView>
    <asp:SqlDataSource
        id="srcProductCategories"
        ConnectionString="<%$ ConnectionStrings:Products %>"
        SelectCommand="SELECT Id,Name FROM ProductCategories"
        Runat="server" />
    </div>
    </form>
</body>
</html>


File: Web.config

<configuration>
  <connectionStrings>
    <add name="Products" 
         connectionString="Data Source=.\SQLEXPRESS;
         AttachDbFilename=|DataDirectory|MyDatabase.mdf;Integrated Security=True;User Instance=True" />
  </connectionStrings>
</configuration>

Related examples in the same category

1.	Editing Data using Templated Columns
2.	Displaying Column Summaries
3.	GridView with Template and backend code
4.	Master-Detail GridView in Single Page
5.	Using Templated Columns with GridView

Displaying Nested Master/Details Forms : TemplateField « Data Binding « ASP.Net

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