How to populate textbox with Dropdown list value?

Question

1.00/5 (2 votes)

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I have a DDL that is not data bound. It is made up with a list of things I have for the user to choose from. I am trying to get that value to populate into a textbox. How would I do this?

ASP.NET

<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True"
                   onselectedindexchanged="DropDownList1_SelectedIndexChanged" Width="150px">
                   <asp:ListItem>Select Calendar</asp:ListItem>
                   <asp:ListItem>Semester</asp:ListItem>
                   <asp:ListItem>Quarter</asp:ListItem>
               </asp:DropDownList>

Code Behind

C#

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
        {
            //TextBoxCal.Text = ["Calendar"].ToString();
        }

Posted 24-Jul-15 3:53am

Computer Wiz99

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F-ES Sitecore · Accepted Answer · 2015-07-24T04:04:00

Solution 1

C#

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
    TextBoxCal.Text = DropDownList1.SelectedValue;
}

Posted 24-Jul-15 4:04am

F-ES Sitecore

Comments

Computer Wiz99 24-Jul-15 10:20am

Thanks that worked great!!!

Computer Wiz99 24-Jul-15 10:28am

When the user selects a value in the DDL the textbox populates but the Label I have in place does not change until the user selects "Select Calendar" then the user can select a value and the Label changes. Why does this happen? How can I correct it?

F-ES Sitecore 24-Jul-15 10:32am

Do the label update in the SelectedIndexChanged event as well.

Computer Wiz99 24-Jul-15 10:34am

Okay, So I should remove it from Page_Load and put it in the SelectedIndexChanged event?

F-ES Sitecore 24-Jul-15 10:36am

If you want the label to update when the dropdown changes then the changed event is the best place for it.

Computer Wiz99 24-Jul-15 10:45am

Got it. Thanks