I am calling ajax for populating a table nested in repeater. This error is showing, An object reference is required for the non-static field, method, or propert.Can anybody help? Thanks in advancey

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C#

Ajax

[WebMethod]
public static void GetStockLedger()
{
string DBCon = ConfigurationManager.ConnectionStrings["DBConnection"].ToString();
SqlConnection sqlCon = new SqlConnection(DBCon);
sqlCon.Open();
SqlCommand sqlCmd = new SqlCommand("GetInvestorPortfolioList", sqlCon);

//sqlCmd.CommandType = CommandType.StoredProcedure;
//SqlParameter param = new SqlParameter();
//param = sqlCmd.Parameters.Add("@ParamInvestor", SqlDbType.NVarChar);
//param.Direction = ParameterDirection.Input;
//param.Value = "SeqName";
//SqlDataReader data = sqlCmd.ExecuteReader();

sqlCmd.CommandType = CommandType.StoredProcedure;

sqlCmd.Parameters.Add("@ParamInvestor", SqlDbType.VarChar).Value = "01010";
sqlCmd.Parameters.Add("@PortfolioDate", SqlDbType.DateTime).Value = "2013-03-28";
sqlCmd.Parameters.Add("@BusinessDate", SqlDbType.DateTime).Value = "2013-03-28";

SqlDataAdapter da = new SqlDataAdapter(sqlCmd);
DataTable dt = new DataTable();
da.Fill(dt);

Repeater1.DataSource = dt;
Repeater1.DataBind();

sqlCon.Close();
}