Both DataSource and DataSourceID are defined on 'MedicalSche

hi, kindly help on this one...am getting the following error " Both DataSource and DataSourceID are defined on 'MedicalSchemeDetailGrid'. Remove one definition"

below is my aspx page with the datasource

<ContentTemplate>
<ctls:SearchPanel ID="MedicalSchemeDetailSearchPanel" runat="server" GridID="MedicalSchemeDetailGrid" SearchButtonText="Search" ClearButtonText="Clear" ExpressionLabel="Search Expression" Visible="false" />
<div class="vsep"> div> <rwg:BulkEditGridView ID="MedicalSchemeDetailGrid" runat="server" DataMember="MedicalSchemeDetail" OnPageIndexChanging="MedicalSchemeDetailGrid_PageIndexChanging" AllowPaging="true" DataSourceID="DBDataSource1" AutoGenerateColumns="False" DataKeyNames="CompanyID,BranchID,DepartmentID,MedicalSchemeID,ItemID,PatientStatus"> <HeaderStyle Height="30px" />

and below is my code behind

protected void FilterMedicalSchemeDetails(string treatmentGroup)
{
string medicalschemdid = string.Empty;
string selectedGroup = string.Empty;
DataView dw = (DBDataSource1.State.BusinessObject.DataSet.Tables["MedicalSchemeHeader"]).DefaultView;
medicalschemdid = dw[0]["MedicalSchemeID"].ToString();
SqlDataSource dbSrc = new SqlDataSource();
dbSrc.ConnectionString = TraceBizCommon.Configuration.ConfigSettings.ConnectionString;
if (treatmentGroup != string.Empty && treatmentGroup != "ALL")
dbSrc.SelectCommand = "SELECT * FROM MedicalSchemeDetailByTreatmentGroups WHERE CompanyID = '" + CompanyID + "' AND BranchID = '" + BranchID + "' AND DepartmentID = '" + DepartmentID + "' AND TreatmentGroup = '" + treatmentGroup + "' ORDER BY MedicalSchemeID";
else
dbSrc.SelectCommand = "SELECT * FROM MedicalSchemeDetailByTreatmentGroups WHERE CompanyID = '" + CompanyID + "' AND BranchID = '" + BranchID + "' AND DepartmentID = '" + DepartmentID + "' ORDER BY MedicalSchemeID";
MedicalSchemeDetailGrid.DataSource = dbSrc;
MedicalSchemeDetailGrid.DataBind();
}