Setting dropdownlist selecteditem programmatically

Question

I want to set selecteditem for asp. net dropdownlist control programmatically.

So I want to pass a value to the dropdownlist control to set the selected item where is the item equal to the passed value.

Answer 1

Assuming the list is already data bound you can simply set the SelectedValue property on your dropdown list.

list.DataSource = GetListItems(); // <-- Get your data from somewhere.
list.DataValueField = "ValueProperty";
list.DataTextField = "TextProperty";
list.DataBind();

list.SelectedValue = myValue.ToString();

The value of the myValue variable would need to exist in the property specified within the DataValueField in your controls databinding.

UPDATE: If the value of myValue doesn't exist as a value with the dropdown list options it will default to select the first option in the dropdown list.

Answer 2

Here is the code I was looking for:

option one: DDL.SelectedIndex = DDL.Items.IndexOf(DDL.Items.FindByText("PassedValue"));

option two: DDL.SelectedIndex = DDL.Items.IndexOf(DDL.Items.FindByValue("PassedValue"));

Answer 3

Hello,

ddlData.SelectedIndex will contain the int value.To select the specific value into dropdown

ddlData.SelectedIndex=ddlData.Items.IndexOf(ddlData.Items.FindByText("value"));

return type of ddlData.Items.IndexOf(ddlData.Items.FindByText("value")); is int value.

Thanks