C#导出Excel,并且设置Excel单元格格式，合并单元格.

注：要添加COM组件 Microsoft Excel 11.0 Object Library 引用。

具体代码如下：

using System;

using System.Collections.Generic;

using System.Text;

using System.Data.SqlClient;

using Excel;

using System.Reflection;

using System.Data;

using System.Data.OleDb;

namespace RecruitmentReport

{

classdoExcel

{

enumColumnName {A1=1,B1,C1,D1,E1,F1,G1,H1,I1,J1,K1,L1,M1,N1,O1,P1,Q1,R1,S1,T1,U1,V1,W1,X1,Y1,Z1}

/// <summary>

/// 导出到Execl

/// </summary>

/// <param name="dt">数据集</param>

/// <param name="strSheetName">工作部名称</param>

/// <param name="pathloading">保存路径</param>

/// <param name="title">标题名</param>

publicvoid doExport(DataSet dt, string strSheetName, string pathloading, string title)

{

int columnIndex = dt.Tables[0].Columns.Count;

string cName =((ColumnName)columnIndex).ToString();

Excel.Application excel = new Excel.Application(); //Execl的操作类

Excel.Workbook bookDest =(Excel.Workbook)excel.Workbooks.Add(Missing.Value);

Excel.Worksheet sheetDest = bookDest.Worksheets.Add(Missing.Value, Missing.Value, Missing.Value, Missing.Value) as Excel.Worksheet;//给工作薄添加一个Sheet

sheetDest.Name = strSheetName;

for (int i = bookDest.Worksheets.Count; i >1; i--)

{

Worksheet wt = (Worksheet)bookDest.Worksheets[i];

if (wt.Name != strSheetName)

{

wt.Delete();

}

}

int rowIndex = 2;

int colIndex = 0;

Range rngRow = (Excel.Range)sheetDest.Columns[1, Type.Missing];

rngRow.UseStandardWidth = 70;

Range rngA = (Range)sheetDest.Columns["A", Type.Missing];//设置单元格格式

rngA.NumberFormatLocal = "@";//字符型格式

Range rngJ = (Range)sheetDest.Columns["J", Type.Missing];

rngJ.NumberFormatLocal = "@";

Range rngQ = (Range)sheetDest.Columns["Q", Type.Missing];

rngQ.NumberFormatLocal = "@";

Range rngE = (Range)sheetDest.Columns["E", Type.Missing];

rngE.NumberFormatLocal = @"yyyy-mm-dd";//日期型格式

sheetDest.get_Range("A1", cName).Merge(sheetDest.get_Range("A1", cName).MergeCells);//合并单元格

excel.Application.Workbooks.Add(true);

try

{

Range rngfirst = (Excel.Range)sheetDest.Cells[1, 1];

sheetDest.Cells[1, 1] = title + System.DateTime.Now.Month.ToString().PadLeft(2, '0') + System.DateTime.Now.Day.ToString().PadLeft(2, '0') + System.DateTime.Now.Year.ToString();

rngfirst.Font.Size = 14;

rngfirst.Font.Name = "Calibri";//设置单元格字体

rngfirst.RowHeight = 18;

rngfirst.HorizontalAlignment = XlHAlign.xlHAlignCenter;

rngfirst.Font.Bold = true;

rngfirst.Borders.LineStyle = XlLineStyle.xlContinuous;//设置单元格边框

foreach (DataColumn col in dt.Tables[0].Columns)

{

colIndex++;

Range rng = (Excel.Range)sheetDest.Cells[2, colIndex];

sheetDest.Cells[2, colIndex] = col.ColumnName;//Execl中的第一列把DataTable的列名先导进去

rng.Font.Name = "Calibri";

rng.Font.Size = 11;

rng.Font.Bold = true;

rng.Font.Color = ConsoleColor.Blue;

rng.HorizontalAlignment = XlHAlign.xlHAlignCenter;

rng.RowHeight = 15;

rng.Borders.LineStyle = XlLineStyle.xlContinuous;

rng.ColumnWidth = 15.5;

// sheetDest.Range[1, colIndex].Font.Bold = false;

}

//导入数据行

foreach (DataRow row in dt.Tables[0].Rows)

{

rowIndex++;

colIndex = 0;

foreach (DataColumn col in dt.Tables[0].Columns)

{

colIndex++;

sheetDest.Cells[rowIndex, colIndex] = row[col.ColumnName].ToString();

Range rng01 = (Excel.Range)sheetDest.Cells[rowIndex, colIndex];

rng01.HorizontalAlignment = XlHAlign.xlHAlignCenter;

rng01.Borders.LineStyle = XlLineStyle.xlContinuous;

rng01.RowHeight = 15;

rng01.Font.Name = "Calibri";

rng01.Font.Size = 11;

}

}

}

catch { thrownewException(); }

bookDest.Saved = true;

bookDest.SaveCopyAs(pathloading);//保存

excel.Quit();

excel = null;

GC.Collect();//垃圾回收

}

}

}
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