DropDownList in Gridview EditItemTemplate value Selected

In the gridview we can use textbox by default for the edit template, that is to edit a row we can have textbox. Some times we may need of a dropdownlist in the edit template of the gridview, By the time we have to use the edit template with a dropdownlist and we need to highlight the selected item in the dropdownlist for the edit item. For such scenario refer the following code lines for a better understanding.

GridView markups for the edit template:

</asp:TemplateField>

<asp:TemplateField HeaderText="Item Details">

<ItemTemplate><%# Eval("Item") %></ItemTemplate>

<EditItemTemplate>

<asp:DropDownList ID="ddlItems" DataSource='<%# GetAllItems() %>' DataTextField="Item"

DataValueField="ItemID" SelectedValue='<%# Bind("ItemID") %>' runat="server">

</asp:DropDownList>

</EditItemTemplate>

</asp:TemplateField>

In the code behind:

The method to get all the items details from the database must be a public method, that means the access modifier of the GetAllItems() method should be public. And its return type must a dataset or a datatable.

public DataSet GetAllItems()

{

try

{

DataSet dsItems = new DataSet();

//Your method to fill the dataset from the DataBase

ViewState["ItemTable"] = dsItems;

return dsItems;

}

catch (Exception ex)

{

throw ex;

}

}