方法一：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Reflection;
using Microsoft.Office.Interop.Excel;
namespace TestEXCLE
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
_DataGridView = this.dataGridView1;
ExportToExcel("www");
}
private DataGridView _DataGridView;
private string _FileName = "";
///// <summary>
///// 構造函數
///// </summary>
///// <param name="ownerForm">擁用者窗體</param>
///// <param name="dataGridView">DataGridView對象</param>
public Form1(Form ownerForm, DataGridView dataGridView)
{
_DataGridView = dataGridView;
}
/// <summary>
/// 導出到Excel
/// </summary>
/// <param name="pfileName">文件名,不需要帶擴展名</param>
public void ExportToExcel(string pfileName)
{
_FileName = pfileName == null ? "未命名" : pfileName.Trim();
string fileName = ShowSaveFileDialog("Microsoft Excel Document", "Microsoft Excel|*.xls");
if (fileName != "")
{
try
{
ExportTo(fileName);
OpenFile(fileName);
}
catch (System.Exception err)
{
MessageBox.Show(err.Message);
}
}
}
/// <summary>
/// 導出到
/// </summary>
/// <param name="fileName">文件名</param>
private void ExportTo(string fileName)
{
//
//獲取指定文件是否存在
bool isExist = System.IO.File.Exists(fileName);
//
//定義一個缺少的object對象
object oMis = System.Reflection.Missing.Value;
//
//定義一個Excel區域對象,用於保存選擇的區域
Microsoft.Office.Interop.Excel.Range selectRange;
//
//聲明一Excel Application 對象
Microsoft.Office.Interop.Excel.ApplicationClass App = null;
//
//聲明一Excel Workbook 對象
Microsoft.Office.Interop.Excel.Workbook wb = null;
//
//聲明一Excel Worksheet 對象
Microsoft.Office.Interop.Excel.Worksheet ws = null;
//
//將當前水標狀態保存到臨時變量中後將光標置爲忙狀態
Cursor currentCursor = Cursor.Current;
Cursor.Current = Cursors.WaitCursor;
try
{
App = new Microsoft.Office.Interop.Excel.ApplicationClass();
//
//判斷指定的文件是否存在
if (isExist)
{
//
//打開已存在的工作薄 Workbook
wb = App.Workbooks.Open(fileName, oMis, oMis, oMis, oMis, oMis, oMis, oMis, oMis, oMis, oMis, oMis, oMis, oMis, oMis);
//新建工作表
ws = (Microsoft.Office.Interop.Excel.Worksheet)wb.Worksheets.Add(oMis, oMis, 1, oMis);
//指定工作表名
ws.Name = this.Text + wb.Sheets.Count; //加 wb.Sheets.Count 防止重名
}
else
{
//
//增加一工作薄 Workbook
wb = App.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
//新建工作薄後默認有一個工作表,取得第一個工作表
ws = (Microsoft.Office.Interop.Excel.Worksheet)wb.Sheets[1];
//指定工作表名
ws.Name = this.Text;
}
//
//增加一工作表 Worksheet
//
//聲明兩個變量記錄Excle當前操作的行號與列號
int rown = 0;
int coln = 0;
//
//聲明一變量用於記錄當前DatagridView的總行數
int colCount = _DataGridView.Columns.Count;
_DataGridView.SuspendLayout();
//
//將DataGirdView列頭寫入Excel中
foreach (DataGridViewColumn dgvc in _DataGridView.Columns)
{
selectRange = ws.get_Range(ws.Cells[rown + 1, ++coln], ws.Cells[rown + 1, coln]);
selectRange.Columns.ColumnWidth = dgvc.Width / 10;
selectRange.Interior.ColorIndex = 16;
selectRange.Interior.Pattern = Microsoft.Office.Interop.Excel.Constants.xlSolid;
selectRange.Font.ColorIndex = 2;
selectRange.HorizontalAlignment = Microsoft.Office.Interop.Excel.Constants.xlCenter;
selectRange.VerticalAlignment = Microsoft.Office.Interop.Excel.Constants.xlCenter;
selectRange.set_Item(1, 1, dgvc.HeaderText);
}
//
//行號增加一
rown++;
//
//將DataGridView中所有的行數寫入Excel中
foreach (DataGridViewRow dgvr in _DataGridView.Rows)
{
for (int i = 0; i < colCount; i++)
{
selectRange = ws.get_Range(ws.Cells[rown + 1, i + 1], ws.Cells[rown + 1, i + 1]);
selectRange.set_Item(1, 1, dgvr.Cells[i].Value);
}
rown++;
}
//
//寫入完成後將有數據的範圍內設置其邊框與內部線條
ws.UsedRange.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlEdgeTop].Weight = 3;
ws.UsedRange.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlEdgeBottom].Weight = 3;
ws.UsedRange.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlEdgeLeft].Weight = 3;
ws.UsedRange.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlEdgeRight].Weight = 3;
ws.UsedRange.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideHorizontal].Weight = 2;
ws.UsedRange.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideVertical].Weight = 2;
//
//設置Wookbook爲已保存狀態
wb.Saved = true;
if (isExist)
{
wb.Save();
}
else
{
//
//將當前工作薄保存爲指定的文件名
wb.SaveCopyAs(fileName);
}
}
catch (Exception exp)
{
MessageBox.Show(exp.Message, "錯誤", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
_DataGridView.ResumeLayout();
wb.Close(false, null, null);
//
//退出Excel程序
App.Quit();
//
//將當前光標更改回原來的狀態
Cursor.Current = currentCursor;
}
}
/// <summary>
/// 打開文件
/// </summary>
/// <param name="fileName">文件名</param>
private void OpenFile(string fileName)
{
if (MessageBox.Show("你想打開這個文件嗎?", "導出到...", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
try
{
System.Diagnostics.Process process = new System.Diagnostics.Process();
process.StartInfo.FileName = fileName;
process.StartInfo.Verb = "Open";
process.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Normal;
process.Start();
}
catch
{
MessageBox.Show(this, "你的計算機中未安裝Excel,不能打開該文檔!" , this.ProductName
, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
/// <summary>
/// 顯示保存文件對話框,並返回選擇的文件路徑
/// </summary>
/// <param name="title">對話框的標題</param>
/// <param name="filter">過濾器</param>
/// <returns>選擇的文件路徑</returns>
private string ShowSaveFileDialog(string title, string filter)
{
SaveFileDialog dlg = new SaveFileDialog();
string name = _FileName;
int n = name.LastIndexOf(".") + 1;
if (n > 0) name = name.Substring(n, name.Length - n);
dlg.Title = "導出到" + title;
dlg.FileName = name;
dlg.Filter = filter;
if (dlg.ShowDialog() == DialogResult.OK) return dlg.FileName;
return "";
}
private void Form1_Load(object sender, EventArgs e)
{
// TODO: 這行代碼將數據加載到表“testDataSet2.chengji”中。您可以根據需要移動或移除它。
this.chengjiTableAdapter.Fill(this.testDataSet2.chengji);
}
}
}
方法二：
#region DataGridView數據顯示到Excel
/// <summary>
/// 打開Excel並將DataGridView控件中數據導出到Excel
/// </summary>
/// <param name="dgv">DataGridView對象 </param>
/// <param name="isShowExcle">是否顯示Excel界面 </param>
/// <remarks>
/// add com "Microsoft Excel 11.0 Object Library"
/// using Excel=Microsoft.Office.Interop.Excel;
/// </remarks>
/// <returns> </returns>
public bool DataGridviewShowToExcel(DataGridView dgv, bool isShowExcle)
{
if (dgv.Rows.Count == 0)
return false;
//建立Excel對象
Excel.Application excel = new Excel.Application();
excel.Application.Workbooks.Add(true);
excel.Visible = isShowExcle;
//生成字段名稱
for (int i = 0; i < dgv.ColumnCount; i++)
{
excel.Cells[1, i + 1] = dgv.Columns[i].HeaderText;
}
//填充數據
for (int i = 0; i < dgv.RowCount - 1; i++)
{
for (int j = 0; j < dgv.ColumnCount; j++)
{
if (dgv[j, i].ValueType == typeof(string))
{
excel.Cells[i + 2, j + 1] = "'" + dgv[j, i].Value.ToString();
}
else
{
excel.Cells[i + 2, j + 1] = dgv[j, i].Value.ToString();
}
}
}
return true;
}
#endregion
方法三：
#region DateGridView導出到csv格式的Excel
/// <summary>
/// 常用方法，列之間加/t，一行一行輸出，此文件其實是csv文件，不過默認可以當成Excel打開。
/// </summary>
/// <remarks>
/// using System.IO;
/// </remarks>
/// <param name="dgv"></param>
private void DataGridViewToExcel(DataGridView dgv)
{
SaveFileDialog dlg = new SaveFileDialog();
dlg.Filter = "Execl files (*.xls)|*.xls";
dlg.FilterIndex = 0;
dlg.RestoreDirectory = true;
dlg.CreatePrompt = true;
dlg.Title = "保存爲Excel文件";
if (dlg.ShowDialog() == DialogResult.OK)
{
Stream myStream;
myStream = dlg.OpenFile();
StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding(-0));
string columnTitle = "";
try
{
//寫入列標題
for (int i = 0; i < dgv.ColumnCount; i++)
{
if (i > 0)
{
columnTitle += "/t";
}
columnTitle += dgv.Columns[i].HeaderText;
}
sw.WriteLine(columnTitle);
//寫入列內容
for (int j = 0; j < dgv.Rows.Count; j++)
{
string columnValue = "";
for (int k = 0; k < dgv.Columns.Count; k++)
{
if (k > 0)
{
columnValue += "/t";
}
if (dgv.Rows[j].Cells[k].Value == null)
columnValue += "";
else
columnValue += dgv.Rows[j].Cells[k].Value.ToString().Trim();
}
sw.WriteLine(columnValue);
}
sw.Close();
myStream.Close();
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
finally
{
sw.Close();
myStream.Close();
}
}
}
#endregion
方法四：
#region DataGridView導出到Excel，有一定的判斷性
/// <summary>
///方法，導出DataGridView中的數據到Excel文件
/// </summary>
/// <remarks>
/// add com "Microsoft Excel 11.0 Object Library"
/// using Excel=Microsoft.Office.Interop.Excel;
/// using System.Reflection;
/// </remarks>
/// <param name= "dgv"> DataGridView </param>
public static void DataGridViewToExcel(DataGridView dgv)
{
#region 驗證可操作性
//申明保存對話框
SaveFileDialog dlg = new SaveFileDialog();
//默然文件後綴
dlg.DefaultExt = "xls ";
//文件後綴列表
dlg.Filter = "EXCEL文件(*.XLS)|*.xls ";
//默然路徑是系統當前路徑
dlg.InitialDirectory = Directory.GetCurrentDirectory();
//打開保存對話框
if (dlg.ShowDialog() == DialogResult.Cancel) return;
//返回文件路徑
string fileNameString = dlg.FileName;
//驗證strFileName是否爲空或值無效
if (fileNameString.Trim() == " ")
{ return; }
//定義表格內數據的行數和列數
int rowscount = dgv.Rows.Count;
int colscount = dgv.Columns.Count;
//行數必須大於0
if (rowscount <= 0)
{
MessageBox.Show("沒有數據可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
//列數必須大於0
if (colscount <= 0)
{
MessageBox.Show("沒有數據可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
//行數不可以大於65536
if (rowscount > 65536)
{
MessageBox.Show("數據記錄數太多(最多不能超過65536條)，不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
//列數不可以大於255
if (colscount > 255)
{
MessageBox.Show("數據記錄行數太多，不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
//驗證以fileNameString命名的文件是否存在，如果存在刪除它
FileInfo file = new FileInfo(fileNameString);
if (file.Exists)
{
try
{
file.Delete();
}
catch (Exception error)
{
MessageBox.Show(error.Message, "刪除失敗 ", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
}
#endregion
Excel.Application objExcel = null;
Excel.Workbook objWorkbook = null;
Excel.Worksheet objsheet = null;
try
{
//申明對象
objExcel = new Microsoft.Office.Interop.Excel.Application();
objWorkbook = objExcel.Workbooks.Add(Missing.Value);
objsheet = (Excel.Worksheet)objWorkbook.ActiveSheet;
//設置EXCEL不可見
objExcel.Visible = false;
//向Excel中寫入表格的表頭
int displayColumnsCount = 1;
for (int i = 0; i <= dgv.ColumnCount - 1; i++)
{
if (dgv.Columns[i].Visible == true)
{
objExcel.Cells[1, displayColumnsCount] = dgv.Columns[i].HeaderText.Trim();
displayColumnsCount++;
}
}
//設置進度條
//tempProgressBar.Refresh();
//tempProgressBar.Visible = true;
//tempProgressBar.Minimum=1;
//tempProgressBar.Maximum=dgv.RowCount;
//tempProgressBar.Step=1;
//向Excel中逐行逐列寫入表格中的數據
for (int row = 0; row <= dgv.RowCount - 1; row++)
{
//tempProgressBar.PerformStep();
displayColumnsCount = 1;
for (int col = 0; col < colscount; col++)
{
if (dgv.Columns[col].Visible == true)
{
try
{
objExcel.Cells[row + 2, displayColumnsCount] = dgv.Rows[row].Cells[col].Value.ToString().Trim();
displayColumnsCount++;
}
catch (Exception)
{
}
}
}
}
//隱藏進度條
//tempProgressBar.Visible = false;
//保存文件
objWorkbook.SaveAs(fileNameString, Missing.Value, Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Excel.XlSaveAsAccessMode.xlShared, Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value);
}
catch (Exception error)
{
MessageBox.Show(error.Message, "警告 ", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
finally
{
//關閉Excel應用
if (objWorkbook != null) objWorkbook.Close(Missing.Value, Missing.Value, Missing.Value);
if (objExcel.Workbooks != null) objExcel.Workbooks.Close();
if (objExcel != null) objExcel.Quit();
objsheet = null;
objWorkbook = null;
objExcel = null;
}
MessageBox.Show(fileNameString + "/n/n導出完畢! ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
#endregion
以上資料來自網絡，非常感謝各位作者。