public DataTable ExcelToDS(string Path)
{
string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + Path + ";" + "Extended Properties=Excel 8.0;";
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
string strExcel = "";
OleDbDataAdapter myCommand = null;
DataTable dt = null;
strExcel = "select * from [sheet1$]";
myCommand = new OleDbDataAdapter(strExcel, strConn);
dt = new DataTable();
myCommand.Fill(dt);
return dt;
}
{
string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + Path + ";" + "Extended Properties=Excel 8.0;";
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
string strExcel = "";
OleDbDataAdapter myCommand = null;
DataTable dt = null;
strExcel = "select * from [sheet1$]";
myCommand = new OleDbDataAdapter(strExcel, strConn);
dt = new DataTable();
myCommand.Fill(dt);
return dt;
}
但是上面的代码只是查询sheet1$表，如果用户把sheet表名改了就是报下面的错：
'sheet1$' 不是一个有效名称。请确认它不包含无效的字符或标点，且名称不太长。
那么怎样才能获得Excel中各个sheet的名称呢？这样就能动态的选中返回哪个sheet的数据，即使用户更改了名称也不怕，完全可以把所有sheet的名称列出来供用户选择:
那么下面就把解决问题的代码列出来，主要用到了OleDbConnection.GetOleDbSchemaTable()方法
/// <summary>
/// 根据excel的文件的路径提取其中表的数据
/// </summary>
/// <param name="Path">Excel文件的路径</param>
private void GetDataFromExcelWithAppointSheetName(string Path)
{
//连接串
string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + Path + ";" + "Extended Properties=Excel 8.0;";
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
//返回Excel的架构，包括各个sheet表的名称,类型，创建时间和修改时间等
DataTable dtSheetName = conn. GetOleDbSchemaTable (OleDbSchemaGuid.Tables, new object[] { null, null, null, "Table" });
//包含excel中表名的字符串数组
string[] strTableNames = new string[dtSheetName.Rows.Count];
for (int k = 0; k < dtSheetName.Rows.Count; k++)
{
strTableNames[k] = dtSheetName.Rows[k]["TABLE_NAME"].ToString();
}
OleDbDataAdapter myCommand = null;
DataTable dt = new DataTable();
//从指定的表明查询数据,可先把所有表明列出来供用户选择
string strExcel = "select * from [" + strTableNames[0] + "]";
myCommand = new OleDbDataAdapter(strExcel, strConn);
dt = new DataTable();
myCommand.Fill(dt);
dataGridView1.DataSource = dt; //绑定到界面
}
