c# datagridview导出到excel

方法一：添加dll引用

右击选择你所在的项目的“引用”，选择“添加引用”。

弹出“添加引用”对话框。

选择“COM”选项卡。

选择“Microsoft Excel 11.0 Object Library”

单击“确定”按钮。

代码

public static bool ExportForDataGridview(DataGridView gridView, string fileName, bool isShowExcle)
        {

            //建立Ｅｘｃｅｌ对象

            Microsoft.Office.Interop.Excel.Application app = new Microsoft.Office.Interop.Excel.Application();
            try
            {
                if (app == null)
                {
                    return false;
                }
                app.Visible = isShowExcle;
                Workbooks workbooks = app.Workbooks;
                _Workbook workbook = workbooks.Add(XlWBATemplate.xlWBATWorksheet);
                Sheets sheets = workbook.Worksheets;
                _Worksheet worksheet = (_Worksheet)sheets.get_Item(1);
                if (worksheet == null)
                {
                    return false;
                }
                string sLen = "";
                //取得最后一列列名
                char H = (char)(64 + gridView.ColumnCount / 26);
                char L = (char)(64 + gridView.ColumnCount % 26);
                if (gridView.ColumnCount < 26)
                {
                    sLen = L.ToString();
                }
                else
                {
                    sLen = H.ToString() + L.ToString();
                }

                //标题
                string sTmp = sLen + "1";
                Range ranCaption = worksheet.get_Range(sTmp, "A1");
                string[] asCaption = new string[gridView.ColumnCount];
                for (int i = 0; i < gridView.ColumnCount; i++)
                {
                    asCaption[i] = gridView.Columns[i].HeaderText;
                }
                ranCaption.Value2 = asCaption;

                //数据
                object[] obj = new object[gridView.Columns.Count];
                for (int r = 0; r < gridView.RowCount - 1; r++)
                {
                    for (int l = 0; l < gridView.Columns.Count; l++)
                    {
                        if (gridView[l, r].ValueType == typeof(DateTime))
                        {
                            obj[l] = gridView[l, r].Value.ToString();
                        }
                        else
                        {
                            obj[l] = gridView[l, r].Value;
                        }
                    }
                    string cell1 = sLen + ((int)(r + 2)).ToString();
                    string cell2 = "A" + ((int)(r + 2)).ToString();
                    Range ran = worksheet.get_Range(cell1, cell2);
                    ran.Value2 = obj;
                }
                //保存
                workbook.SaveCopyAs(fileName);
                workbook.Saved = true;
            }
            finally
            {
                //关闭
                app.UserControl = false;
                app.Quit();
            }
            return true;

        }

方法二

用流保存成xls文件. 这种方法比较好,不用引用Excel组件.   下面是具体例子,可以参考

using System.IO;

        ///

/// 另存新档按钮

///

private void SaveAs() //另存新档按钮 导出成Excel

{

SaveFileDialog saveFileDialog = new SaveFileDialog();

saveFileDialog.Filter = "Execl files (*.xls)|*.xls";

saveFileDialog.FilterIndex = 0;

saveFileDialog.RestoreDirectory = true;

saveFileDialog.CreatePrompt = true;

saveFileDialog.Title = "Export Excel File To";

saveFileDialog.ShowDialog();

Stream myStream;

myStream = saveFileDialog.OpenFile();

//StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding("gb2312"));

StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding(-0));

string str = "";

try

{

//写标题

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

{

if (i > 0)

{

str += "\t";

}

str += dgvAgeWeekSex.Columns[i].HeaderText;

}

sw.WriteLine(str);

//写内容

for (int j = 0; j < dgvAgeWeekSex.Rows.Count; j++)

{

string tempStr = "";

for (int k = 0; k < dgvAgeWeekSex.Columns.Count; k++)

{

if (k > 0)

{

tempStr += "\t";

}

tempStr += dgvAgeWeekSex.Rows[j].Cells[k].Value.ToString();

}

sw.WriteLine(tempStr);

}

sw.Close();

myStream.Close();

}

catch (Exception e)

{

MessageBox.Show(e.ToString());

}

finally

{

sw.Close();

myStream.Close();

}

}