Populating a combobox with values from SQL database

I need to populate a combobox with values from a dataset. When running the code below, I recieve "Cannot bind to the new display member.Parameter name: newDisplayMember". Any suggestions?

        DAL rating = new DAL();
        DataSet ds = rating.getRatings("SELECT * FROM tblRating");
        cboRating.DataSource = ds;
        cboRating.DisplayMember = "Rating"; //Colunm name for display
        cboRating.ValueMember = "RatingID"; //Primary key <----Error here
98fatboyriderAsked:
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Carl TawnConnect With a Mentor Systems and Integration DeveloperCommented:
DataSets usually contain DataTables, and it is usually the DataTable that you bind to.

Try:

        cboRating.DisplayMember = "Rating"; //Colunm name for display
        cboRating.ValueMember = "RatingID"; //Primary key

        cboRating.DataSource = ds.Tables[0];

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If that doesn't work then check to make sure that you are pulling back a column named "RatingID".
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