复制代码 代码如下:
//加载Excel
public DataSet LoadDataFromExcel(string filePath)
{
try
{
string strConn;
//strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties='Excel 8.0;HDR=False;IMEX=1'";
strConn = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'", filePath);
OleDbConnection OleConn = new OleDbConnection(strConn);
OleConn.Open();
String sql = "SELECT * FROM [Sheet1$]";//可是更改Sheet名称，比如sheet2，等等
OleDbDataAdapter OleDaExcel = new OleDbDataAdapter(sql, OleConn);
DataSet OleDsExcle = new DataSet();
OleDaExcel.Fill(OleDsExcle, "Sheet1");
OleConn.Close();
return OleDsExcle;
}
catch (Exception err)
{
return null;
}
}
/// <summary>
/// DataTable直接导出Excel,此方法会把DataTable的数据用Excel打开,再自己手动去保存到确切的位置
/// </summary>
/// <param name="dt">要导出Excel的DataTable</param>
/// <returns></returns>
public bool DoExport(System.Data.DataTable dt)
{
Microsoft.Office.Interop.Excel.Application app = new ApplicationClass();
if (app == null)
{
throw new Exception("Excel无法启动");
}
app.Visible = true;
Workbooks wbs = app.Workbooks;
Workbook wb = wbs.Add(Missing.Value);
Worksheet ws = (Worksheet)wb.Worksheets[1];
int cnt = dt.Rows.Count;
int columncnt = dt.Columns.Count;
// *****************获取数据********************
object[,] objData = new Object[cnt + 1, columncnt]; // 创建缓存数据
// 获取列标题
for (int i = 0; i < columncnt; i++)
{
objData[0, i] = dt.Columns[i].ColumnName;
}
// 获取具体数据
for (int i = 0; i < cnt; i++)
{
System.Data.DataRow dr = dt.Rows[i];
for (int j = 0; j < columncnt; j++)
{
objData[i + 1, j] = dr[j];
}
}
//********************* 写入Excel******************
Range r = ws.get_Range(app.Cells[1, 1], app.Cells[cnt + 1, columncnt]);
r.NumberFormat = "@";
//r = r.get_Resize(cnt+1, columncnt);
r.Value2 = objData;
r.EntireColumn.AutoFit();
app = null;
return true;
}
【C#操作EXCEL DataTable转换的实例代码】相关文章：
★ c#中利用委托反射将DataTable转换为实体集的代码