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Text Box Needs to Display the Selection from the Dropdown Box

Posted on 2014-01-29
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Last Modified: 2014-01-29
need my text box or some text somewhere on my form to display the value selected from my dropdown box.

Example - if an Author's genre of Fiction is selected, the textbox should display Fiction. How do I do this?

I can not use the PageLoad event because that event hides some other fields on the page. I think I need to include something in the selectedindexchange event.

Here is my code:

protected void AuthorsList_SelectedIndexChanged(object sender, EventArgs e) 
    { 
  
  
  
    } 

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asp:DropDownList runat="server" ID="lbAuthorsList"  
       style="float:left;" DataSourceID="odsAuthorsList"  
       DataTextField="DisplayName" DataValueField="AuthorName"  
       onselectedindexchanged="AuthorsList_SelectedIndexChanged"  
       AutoPostBack="true" AppendDataBoundItems="true" > 
</asp:DropDownList>    
  <asp:TextBox id="tb4" Text="Hello World!" runat="server"  
        ondatabinding="AuthorList_SelectedIndexChanged" /> 
  
 <asp:ObjectDataSource ID="odsAuthors" runat="server"  
            SelectMethod="GetAuthorsGenresList" TypeName="GenreSelection"> 
        </asp:ObjectDataSource> 
  
  

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Question by:programmher
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dustock earned 1000 total points
ID: 39818500
The selected Index changed event will allow you to do what your asking and I see AutoPostBack is already set to true.  If you are selecting Fiction from the drop down the code should be something like

tb4.Text = AuthorsList.Text;

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