The Control DataSource or (DataSourceID) is not set

2 posts, 0 answers
  1. Mohamed
    Mohamed avatar
    7 posts
    Member since:
    Oct 2012

    Posted 11 Apr 2013 Link to this post


    I've the following code to bind:

    var lstEmployees = employeeRepository.All.Select(employee => new { employee.Id, employee.Name });

    txtEmployee.DataSource = lstEmployees.ToList();

    txtEmployee.DataTextField = "Name";

    txtEmployee.DataValueField = "Id";


    This code is called in the Page_Load() event inside the

    if (!IsPostBack) block.

    This triggers the error "The Control DataSource or (DataSourceID) is not set" when I start typing into it.
    What I noticed is, when I move the binding code outside the if (!IsPostBack) block, it works correctly.












  2. Princy
    Princy avatar
    17421 posts
    Member since:
    Mar 2007

    Posted 16 Apr 2013 Link to this post

    Hi Mohamed,

    I was able to replicate the issue. On removing the !IsPostBack from the page load, it worked fine for me.

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