设置下拉列表选择的索引

Question

I have a dropdownlist with country names in alphabetical order. I want the dropdown to have (show) India as the default value always. I don't want to set the selected index with a constant because other countries may be added to the list later. How can set the index to "India"?

 ddlCountryCode.DataSource = ds1.Tables["AUser"];
 ddlCountryCode.DataTextField = "CountryCode";
 ddlCountryCode.SelectedIndex = 
             ddlCountryCode.Items.IndexOf(ddlCountryCode.Items.FindByText("India(+91)"));
 ddlCountryCode.DataBind();

doesnt work...

Answer 1

You can use like this

 DropdownList1.SelectedIndex =    
                  DropdownList1.Items.IndexOf(DropdownList1.Items.FindByValue(strText));

or

DropdownList1.SelectedIndex =    
                  DropdownList1.Items.IndexOf(DropdownList1.Items.FindByText(strText));

References
Setting dropdownlist selecteditem programmatically

Edit 1

Change the sequence of your code

ddlCountryCode.DataSource = ds1.Tables["AUser"];
ddlCountryCode.DataTextField = "CountryCode";
ddlCountryCode.DataBind();

ddlCountryCode.SelectedIndex = 
         ddlCountryCode.Items.IndexOf(ddlCountryCode.Items.FindByText("India(+91)"));

Answer 2

DropDownList1.SelectedValue = "India";

Answer 3

Select Index after DataBind(). Data Bind Binds Items in 'ddlCountryCode.Items' So you can Select index of 'india' one items exists with ddlCountryCode.

DropdownList1.Items is a list so u can use IndexOf()

 ddlCountryCode.DataSource = ds1.Tables["AUser"];
 ddlCountryCode.DataTextField = "CountryCode";
 ddlCountryCode.DataBind();
 ddlCountryCode.SelectedIndex = 
 ddlCountryCode.Items.IndexOf(ddlCountryCode.Items.FindByText("India(+91)"));