Cross-thread operation not valid: Control 'gridControl'accessed from a thread other ?

Cross-thread operation not valid: Control 'gridControl' accessed from a thread other than the thread it was created on.

Code:

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string sPath = "";
private void cmdImportExcel1_Click(object sender, EventArgs e)
        {
            OpenFileDialog dlg = new OpenFileDialog();
            dlg.Filter = "Excel Files (.xls; .xlsx;)|*.xls; *.xlsx";
            dlg.InitialDirectory = Environment.CurrentDirectory;
            dlg.Title = "Bạn chọn file excel hợp đồng...";
            DialogResult dlgresult = dlg.ShowDialog();

            if (dlgresult == DialogResult.OK)
            {
                if (!string.IsNullOrEmpty(dlg.FileName))
                {
                    sPath = dlg.FileName;
                    Thread myThr = new Thread(ImportExcel1);
                    myThr.Start();//gridView1
                   
                }
            }
        }
       
        private void ImportExcel1()
        {           
            // Xóa các mẫu tin trong table access
            tmpSQL = "DELETE * FROM HDCNH;";
            if (!clsConnecACS.ThucThiSQL(tmpSQL))
            {
                DevExpress.XtraEditors.XtraMessageBox.Show("Lỗi xóa table HDCNH không thÃ*nh công !", "Thông báo !", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }

            // Lưu các mẫu tin từ Excel vÃ*o Access
            ExcelSaveTableAccess(1, sPath);

            // Nhóm các mẫu tin từ Table Access vÃ* lưu vÃ*o gridView1
            tmpSQL = "SELECT CHINHANH, HD, LOAIHANG, TIEUCHUAN, KHACHHANG, Sum(SOLUONG) AS SLUONG, DONGIA, (SLUONG*DONGIA) AS DOANHTHU,NGAYKY, LOAIHD, NGAYGIAO ";
            tmpSQL += "FROM HDCNH ";
            tmpSQL += "GROUP BY CHINHANH, HD, LOAIHANG, TIEUCHUAN, KHACHHANG, DONGIA, NGAYKY, LOAIHD, NGAYGIAO ";
            tmpSQL += "ORDER BY HD;";
            Debug.Print(tmpSQL);
            //Cross-thread operation not valid: Control 'gridControl' accessed from a thread other than the thread it was created on.
            gridControl1.DataSource = clsConnecACS.FillDatatable(tmpSQL);//Error here
            Format_Gridview(gridView1);
        }

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How to fix this error ?

Quote:

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Originally Posted by dongtrien

Cross-thread operation not valid: Control 'gridControl' accessed from a thread other than the thread it was created on.

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Yes, direct access to any window created in the main thread form any other thread is not allowed.

Quote:

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Originally Posted by dongtrien

How to fix this error ?

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In a multithreaded C++/VC++ application in such a case we usually PostMessage a user defined message to the main GUI thread; the main GUI thread then accesses its child window/control and make the required action (depending on the PostMessage parameters that you have to set).

I use C# language, I'm looking for Thread example about my case