why This Error occur?Both DataSource and DataSourceID are defined on 'cboIndentNo'. Remove one definition.?

Hi,

Error+ Both DataSource and DataSourceID are defined on 'cboIndentNo'.  Remove one definition.?

DataTable dtIngre = new DataTable();
 dtIngre = objWebImp.GetIngredients(Convert.ToInt32(value));

I get the Data and showing in Data Table Visuvalizer

Field Name is like this:

Bajra           12       222     kgs

Rice             13      221     kgs

SqlDataSource ds1 = new SqlDataSource();

 cboIndentNo.DataSource = dtIngre;

 cboIndentNo.DataTextField = "Ingredient";

 cboIndentNo.DataValueField = "ItemId";

cboIndentNo.DataBind();//error showing like this

Both DataSource and DataSourceID are defined on 'cboIndentNo'.  Remove one definition.

Thanks