我用C＃读取excel文件时出错

Question

我读取excel但dataGridView显示数据比行excel文件，所以我不能写datagridview.Rowcount()。我使用下面给出的代码来读取excel文件。

代码：

filePath = txtExcelFile.Text;
string[] fileSpit = filePath.Split('.');
if (filePath.Length > 1 && fileSpit[1] == "xls")
{
    connString = "Provider=Microsoft.JET.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties='Excel 8.0;HDR=No'";
}
else
{
    connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filePath + ";Extended Properties='Excel 12.0;HDR=No'";
}
OleDbCommand cmd = new OleDbCommand(@"Select * from [" +comboBox1.SelectedValue.ToString() + "]", ole);
OleDbDataAdapter oledata = new OleDbDataAdapter();
oledata.SelectCommand = cmd;
DataSet ds = new DataSet();
oledata.Fill(ds);
dataGridView1.DataSource = ds.Tables[0].DefaultView;