1、引用Microsoft.Office.Interop.Excel.dll
2、引用命名空间、使用别名
using System.Reflection;
using Excel = Microsoft.Office.Interop.Excel;
3.写入excel
写入函数
public void ToExcel(string strTitle)
{
int nMax = 9;
int nMin = 4;
int rowCount = nMax - nMin + 1;//总行数
const int columnCount = 4;//总列数
//创建Excel对象
Excel.Application excelApp = new Excel.ApplicationClass();
//新建工作簿
Excel.Workbook workBook = excelApp.Workbooks.Add(true);
//新建工作表
Excel.Worksheet worksheet = workBook.ActiveSheet as Excel.Worksheet;
设置标题
//Excel.Range titleRange = worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[1, columnCount]);//选取单元格
//titleRange.Merge(true);//合并单元格
//titleRange.Value2 = strTitle; //设置单元格内文本
//titleRange.Font.Name = "宋体";//设置字体
//titleRange.Font.Size = 18;//字体大小
//titleRange.Font.Bold = false;//加粗显示
//titleRange.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter;//水平居中
//titleRange.VerticalAlignment = Excel.XlVAlign.xlVAlignCenter;//垂直居中
//titleRange.Borders.LineStyle = Excel.XlLineStyle.xlContinuous;//设置边框
//titleRange.Borders.Weight = Excel.XlBorderWeight.xlThin;//边框常规粗细
//设置表头
string[] strHead = new string[columnCount] { "序号", "范围", "分组1", "分组2" };
int[] columnWidth = new int[4] { 8, 16, 8, 10 };
for (int i = 0; i < columnCount; i++)
{
//Excel.Range headRange = worksheet.Cells[2, i + 1] as Excel.Range;//获取表头单元格
Excel.Range headRange = worksheet.Cells[1, i + 1] as Excel.Range;//获取表头单元格,不用标题则从1开始
headRange.Value2 = strHead[i];//设置单元格文本
headRange.Font.Name = "宋体";//设置字体
headRange.Font.Size = 12;//字体大小
headRange.Font.Bold = false;//加粗显示
headRange.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter;//水平居中
headRange.VerticalAlignment = Excel.XlVAlign.xlVAlignCenter;//垂直居中
headRange.ColumnWidth = columnWidth[i];//设置列宽
// headRange.Borders.LineStyle = Excel.XlLineStyle.xlContinuous;//设置边框
// headRange.Borders.Weight = Excel.XlBorderWeight.xlThin;//边框常规粗细
}
//设置每列格式
for (int i = 0; i < columnCount; i++)
{
//Excel.Range contentRange = worksheet.get_Range(worksheet.Cells[3, i + 1], worksheet.Cells[rowCount - 1 + 3, i + 1]);
Excel.Range contentRange = worksheet.get_Range(worksheet.Cells[2, i + 1], worksheet.Cells[rowCount - 1 + 3, i + 1]);//不用标题则从第二行开始
contentRange.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter;//水平居中
contentRange.VerticalAlignment = Excel.XlVAlign.xlVAlignCenter;//垂直居中
//contentRange.Borders.LineStyle = Excel.XlLineStyle.xlContinuous;//设置边框
// contentRange.Borders.Weight = Excel.XlBorderWeight.xlThin;//边框常规粗细
contentRange.WrapText = true;//自动换行
contentRange.NumberFormatLocal = "@";//文本格式
}
//填充数据
for (int i = nMin; i <= nMax; i++)
{
int k = i - nMin;
//excelApp.Cells[k + 3, 1] = string.Format("{0}", k + 1);
//excelApp.Cells[k + 3, 2] = string.Format("{0}-{1}", i - 0.5, i + 0.5);
//excelApp.Cells[k + 3, 3] = string.Format("{0}", k + 3);
//excelApp.Cells[k + 3, 4] = string.Format("{0}", k + 4);
excelApp.Cells[k + 2, 1] = string.Format("{0}", k + 1);
excelApp.Cells[k + 2, 2] = string.Format("{0}-{1}", i - 0.5, i + 0.5);
excelApp.Cells[k + 2, 3] = string.Format("{0}", k + 3);
excelApp.Cells[k + 2, 4] = string.Format("{0}", k + 4);
}
//设置Excel可见
excelApp.Visible = true;
}
写入按钮函数:
private void button1_Click(object sender, EventArgs e)
{
ToExcel("方式3");
}
结果:
4.读取excel
添加一个opendiog用于选择要读取的excel
命名空间
using System.Diagnostics;
读取函数:
private void OpenExcel(string strFileName)
{
object missing = System.Reflection.Missing.Value;
Excel.Application excel = new Excel.ApplicationClass();//lauch excel application
if (excel == null)
{
this.label1.Text="Can't access excel";
}
else
{
excel.Visible = false; excel.UserControl = true;
// 以只读的形式打开EXCEL文件
Excel.Workbook wb = excel.Application.Workbooks.Open(strFileName, missing, true, missing, missing, missing,
missing, missing, missing, true, missing, missing, missing, missing, missing);
//取得第一个工作薄
Excel.Worksheet ws = (Excel.Worksheet)wb.Worksheets.get_Item(1);
//取得总记录行数 (包括标题列)
int rowsint = ws.UsedRange.Cells.Rows.Count; //得到行数
//int columnsint = mySheet.UsedRange.Cells.Columns.Count;//得到列数
//取得数据范围区域 (不包括标题列)
Excel.Range rng1 = ws.Cells.get_Range("A2", "A" + rowsint);
Excel.Range rng2 = ws.Cells.get_Range("B2", "B" + rowsint);
Excel.Range rng3 = ws.Cells.get_Range("C2", "C" + rowsint);
Excel.Range rng4 = ws.Cells.get_Range("D2", "D" + rowsint);
object[,] arry1 = (object[,])rng1.Value2; //get range's value
object[,] arry2 = (object[,])rng2.Value2;
object[,] arry3 = (object[,])rng3.Value2; //get range's value
object[,] arry4 = (object[,])rng4.Value2;
//将新值赋给一个数组
string[,] arry = new string[rowsint - 1, 4];
//for (int i = 1; i <= rowsint - 1; i++)
for (int i = 1; i <= rowsint - 2; i++)
{
arry[i - 1, 0] = arry1[i, 1].ToString();
arry[i - 1, 1] = arry2[i, 1].ToString();
arry[i - 1, 2] = arry3[i, 1].ToString();
arry[i - 1, 3] = arry4[i, 1].ToString();
}
string a = "";
for (int i = 0; i <= rowsint - 3; i++)
{
a += arry[i, 0] + "|" + arry[i, 1] + "|" + arry[i, 2] + "|" + arry[i, 3]+"\n";
}
this.label1.Text=a;
}
excel.Quit(); excel = null;
Process[] procs = Process.GetProcessesByName("excel");
foreach (Process pro in procs)
{
pro.Kill();//没有更好的方法,只有杀掉进程
}
GC.Collect();
}
读取按钮代码:
private void button1_Click(object sender, EventArgs e)
{
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
OpenExcel(openFileDialog.FileName);
}
}
