如果在每个子窗体里都有一个datagridview，怎么样实现点击不同窗体的datagridview，导出到Excel？

代码如下：
#region 将DataGridView控件中数据导出到Excel

        /// <summary>

        /// 将DataGridView控件中数据导出到Excel

        /// </summary>

        /// <param name="gridView">DataGridView对象</param>

        /// <param name="isShowExcle">是否显示Excel界面</param>

        /// <returns></returns>

        public bool ExportDataGridview(DataGridView gridView, bool isShowExcle)
        {

            if (gridView.Rows.Count == 0)

                return false;

            //建立Excel对象
            Excel.Application excel = new Excel.Application();

            excel.Application.Workbooks.Add(true);

            excel.Visible = isShowExcle;

            //生成字段名称

            for (int i = 0; i < gridView.ColumnCount; i++)
            {

                excel.Cells[1, i + 1] = gridView.Columns[i].HeaderText;

            }

            //填充数据

            for (int i = 0; i < gridView.RowCount - 1; i++)
            {

                for (int j = 0; j < gridView.ColumnCount; j++)
                {

                    if (gridView[j, i].ValueType == typeof(string))
                    {

                        excel.Cells[i + 2, j + 1] = "'" + gridView[j, i].Value.ToString();

                    }

                    else
                    {

                        excel.Cells[i + 2, j + 1] = gridView[j, i].Value.ToString();

                    }

                }

            }

            return true;

        }

        #endregion
命名空间：using Microsoft.Internal.Performance;
调用代码： private void excel_Click(object sender, EventArgs e)
        {
            if (!comm.ExportDataGridview(info, true))

                MessageBox.Show("表格中没有数据，无法导出数据！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }

T-SQL有办法将数据库中的数据导出到EXCEL里.速度更快.