why iam getting parameter value not equal to count value

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C#

ASP.NET

clickevent(...)
{
try


        {
            DateTime createddate = DateTime.Now;
            String superuserid1, basestationname1;
            superuserid1 = Superuserid.SelectedValue;
            basestationname1 = BaseStationName.SelectedValue;
            String employeename = textbox1.Text.Trim();
            ConnectionCls conObj = new ConnectionCls();
            string conStr = conObj.getConnectionString();
            object[] ob = new object[4];
            ob[0] = employeename;
            ob[1] = basestationname1;
            ob[2] = superuserid1;
            ob[3] = createddate;
            DataSet dsEmp = new DataSet();
            dsEmp = InfoTrackDataAccess.DataAccess.ExecuteDataset(conStr, "employeegeofence", ob);//25
            String strMsg = Utility.DeleteMaster(dsEmp, 0);

            if (strMsg.StartsWith("Success"))
            {
                Label1.Visible = true;
                Label1.Text = "success";
            }
            else
            {

            }
        }

        catch (Exception ex)
        {
        }
}

the issue here is in line 25 iam getting an exception "Parameter count does not match Parameter Value count." , my database table has four feilds,the stored procedure is working fine, i checked the braces all are correct .the line "InfoTrackDataAccess.DataAccess.ExecuteDataset" works with other stored procedures its working fine only in this its showing exception,the values are also retreiving correctly in textbox,dropdowns. help me out iam sitting in the company and struggling due to this one