C# 将多个gridview或数据集导出到单个或多个excel工作表

我正在使用此方法将单个网格导出到excel

savedialog.Filter = "Microsoft Excel Documents|*.xls";
            savedialog.DefaultExt = "xls";
            savedialog.FileName = "Document";
            if (savedialog.ShowDialog() == DialogResult.OK)
            {                    
                dtTable.ExportToXls(savedialog.FileName, true);
            }

我需要将4个gridview导出到单个excel工作表或多个工作表

---

请帮我弄清楚它

您也可以从direct表创建它。。 可以按如下方式调用此扩展方法：

using System;
using System.Collections.Generic;
using System.Linq;
using Excel = Microsoft.Office.Interop.Excel;
using System.Data;
using System.Data.OleDb;

DataTable dt;
// fill table data in dt here 
...

// export DataTable to excel
// save excel file without ever making it visible if filepath is given
// don't save excel file, just make it visible if no filepath is given
dt.ExportToExcel(ExcelFilePath);

DataTable类的扩展方法：

public static class My_DataTable_Extensions
{

    // Export DataTable into an excel file with field names in the header line
    // - Save excel file without ever making it visible if filepath is given
    // - Don't save excel file, just make it visible if no filepath is given
    public static void ExportToExcel(this DataTable Tbl, string ExcelFilePath = null)
    {
        try
        {
            if (Tbl == null || Tbl.Columns.Count == 0)
                throw new Exception("ExportToExcel: Null or empty input table!\n");

            // load excel, and create a new workbook
            Excel.Application excelApp = new Excel.Application();
            excelApp.Workbooks.Add();

            // single worksheet
            Excel._Worksheet workSheet = excelApp.ActiveSheet;

            // column headings
            for (int i = 0; i < Tbl.Columns.Count; i++)
            {
                workSheet.Cells[1, (i+1)] = Tbl.Columns[i].ColumnName;
            }

            // rows
            for (int i = 0; i < Tbl.Rows.Count; i++)
            {
                // to do: format datetime values before printing
                for (int j = 0; j < Tbl.Columns.Count; j++)
                {
                    workSheet.Cells[(i + 2), (j + 1)] = Tbl.Rows[i][j];
                }
            }

            // check fielpath
            if (ExcelFilePath != null && ExcelFilePath != "")
            {
                try
                {
                    workSheet.SaveAs(ExcelFilePath);
                    excelApp.Quit();
                    MessageBox.Show("Excel file saved!");
                }
                catch (Exception ex)
                {
                    throw new Exception("ExportToExcel: Excel file could not be saved! Check filepath.\n"
                        + ex.Message);
                }
            }
            else    // no filepath is given
            {
                excelApp.Visible = true;
            }
        }
        catch(Exception ex)
        {
            throw new Exception("ExportToExcel: \n" + ex.Message);
        }
    }
}

公共静态类My_DataTable_扩展
{
//将DataTable导出到excel文件中，并在标题行中显示字段名
//-如果给定文件路径，则保存excel文件而不使其可见
//-不要保存excel文件，如果没有提供文件路径，只需使其可见即可
公共静态void ExportToExcel（此数据表Tbl，字符串ExcelFilePath=null）
{
尝试
{
if（Tbl==null | | Tbl.Columns.Count==0）
抛出新异常（“ExportToExcel:Null或空输入表！\n”）；
//加载excel，并创建新工作簿
Excel.Application excelApp=新的Excel.Application（）；
excelApp.Workbooks.Add（）；
//单一工作表
Excel.\u工作表工作表=excelApp.ActiveSheet；
//列标题
对于（int i=0；i

您也可以从direct表中创建它。。 可以按如下方式调用此扩展方法：

using System;
using System.Collections.Generic;
using System.Linq;
using Excel = Microsoft.Office.Interop.Excel;
using System.Data;
using System.Data.OleDb;

DataTable dt;
// fill table data in dt here 
...

// export DataTable to excel
// save excel file without ever making it visible if filepath is given
// don't save excel file, just make it visible if no filepath is given
dt.ExportToExcel(ExcelFilePath);

DataTable类的扩展方法：

public static class My_DataTable_Extensions
{

    // Export DataTable into an excel file with field names in the header line
    // - Save excel file without ever making it visible if filepath is given
    // - Don't save excel file, just make it visible if no filepath is given
    public static void ExportToExcel(this DataTable Tbl, string ExcelFilePath = null)
    {
        try
        {
            if (Tbl == null || Tbl.Columns.Count == 0)
                throw new Exception("ExportToExcel: Null or empty input table!\n");

            // load excel, and create a new workbook
            Excel.Application excelApp = new Excel.Application();
            excelApp.Workbooks.Add();

            // single worksheet
            Excel._Worksheet workSheet = excelApp.ActiveSheet;

            // column headings
            for (int i = 0; i < Tbl.Columns.Count; i++)
            {
                workSheet.Cells[1, (i+1)] = Tbl.Columns[i].ColumnName;
            }

            // rows
            for (int i = 0; i < Tbl.Rows.Count; i++)
            {
                // to do: format datetime values before printing
                for (int j = 0; j < Tbl.Columns.Count; j++)
                {
                    workSheet.Cells[(i + 2), (j + 1)] = Tbl.Rows[i][j];
                }
            }

            // check fielpath
            if (ExcelFilePath != null && ExcelFilePath != "")
            {
                try
                {
                    workSheet.SaveAs(ExcelFilePath);
                    excelApp.Quit();
                    MessageBox.Show("Excel file saved!");
                }
                catch (Exception ex)
                {
                    throw new Exception("ExportToExcel: Excel file could not be saved! Check filepath.\n"
                        + ex.Message);
                }
            }
            else    // no filepath is given
            {
                excelApp.Visible = true;
            }
        }
        catch(Exception ex)
        {
            throw new Exception("ExportToExcel: \n" + ex.Message);
        }
    }
}

公共静态类My_DataTable_扩展
{
//将DataTable导出到excel文件中，并在标题行中显示字段名
//-如果给定文件路径，则保存excel文件而不使其可见
//-不要保存excel文件，如果没有提供文件路径，只需使其可见即可
公共静态void ExportToExcel（此数据表Tbl，字符串ExcelFilePath=null）
{
尝试
{
if（Tbl==null | | Tbl.Columns.Count==0）
抛出新异常（“ExportToExcel:Null或空输入表！\n”）；
//加载excel，并创建新工作簿
Excel.Application excelApp=新的Excel.Application（）；
excelApp.Workbooks.Add（）；
//单一工作表
Excel.\u工作表工作表=excelApp.ActiveSheet；
//列标题
对于（int i=0；i

您也可以从direct表中创建它。。 可以按如下方式调用此扩展方法：

using System;
using System.Collections.Generic;
using System.Linq;
using Excel = Microsoft.Office.Interop.Excel;
using System.Data;
using System.Data.OleDb;

DataTable dt;
// fill table data in dt here 
...

// export DataTable to excel
// save excel file without ever making it visible if filepath is given
// don't save excel file, just make it visible if no filepath is given
dt.ExportToExcel(ExcelFilePath);

DataTable类的扩展方法：

public static class My_DataTable_Extensions
{

    // Export DataTable into an excel file with field names in the header line
    // - Save excel file without ever making it visible if filepath is given
    // - Don't save excel file, just make it visible if no filepath is given
    public static void ExportToExcel(this DataTable Tbl, string ExcelFilePath = null)
    {
        try
        {
            if (Tbl == null || Tbl.Columns.Count == 0)
                throw new Exception("ExportToExcel: Null or empty input table!\n");

            // load excel, and create a new workbook
            Excel.Application excelApp = new Excel.Application();
            excelApp.Workbooks.Add();

            // single worksheet
            Excel._Worksheet workSheet = excelApp.ActiveSheet;

            // column headings
            for (int i = 0; i < Tbl.Columns.Count; i++)
            {
                workSheet.Cells[1, (i+1)] = Tbl.Columns[i].ColumnName;
            }

            // rows
            for (int i = 0; i < Tbl.Rows.Count; i++)
            {
                // to do: format datetime values before printing
                for (int j = 0; j < Tbl.Columns.Count; j++)
                {
                    workSheet.Cells[(i + 2), (j + 1)] = Tbl.Rows[i][j];
                }
            }

            // check fielpath
            if (ExcelFilePath != null && ExcelFilePath != "")
            {
                try
                {
                    workSheet.SaveAs(ExcelFilePath);
                    excelApp.Quit();
                    MessageBox.Show("Excel file saved!");
                }
                catch (Exception ex)
                {
                    throw new Exception("ExportToExcel: Excel file could not be saved! Check filepath.\n"
                        + ex.Message);
                }
            }
            else    // no filepath is given
            {
                excelApp.Visible = true;
            }
        }
        catch(Exception ex)
        {
            throw new Exception("ExportToExcel: \n" + ex.Message);
        }
    }
}

公共静态类My_DataTable_扩展
{
//将DataTable导出到excel文件中，并在标题行中显示字段名
//-如果给定文件路径，则保存excel文件而不使其可见
//-不要保存excel文件，如果没有提供文件路径，只需使其可见即可
公共静态void ExportToExcel（此数据表Tbl，字符串ExcelFilePath=null）
{
尝试
{
if（Tbl==null | | Tbl.Columns.Count==0）
抛出新异常（“ExportToExcel:Null或空输入表！\n”）；
//加载excel，并创建新工作簿
Excel.Application excelApp=新的Excel.Application（）；
excelApp.Workbooks.Add（）；
//单一工作表
Excel.\u工作表工作表=excelApp.ActiveSheet；
//列标题
对于（int i=0；i