c# - 导入excel文件错误

Question

我在 youtube 上找到了一个视频，展示了如何将 excel 文件导入 datagridview。我收到一个错误：找不到可安装的 ISAM。

这是我的代码，我做错了什么？

private void button1_Click(object sender, EventArgs e)
    {
        OleDbConnection conn = new OleDbConnection();
        conn.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\Nick\Desktop\Pricing2.xlsx" + @";Exended Properties=""Excel 8.0;HDR=No;IMEX=1;ImportMixedTypes=Text;TypeGuessRows=0""";

        OleDbCommand command = new OleDbCommand
        (
            "SELECT PartNumber,ShortDescription,RetailPrice,JobberPrice,BasePrice,YourDiscount,YourPrice,LongDescription FROM [Pricing$]",conn
        );
        DataSet ds = new DataSet();
        OleDbDataAdapter adapter = new OleDbDataAdapter(command);
        adapter.Fill(ds);
        dataGridView1.DataSource = ds.Tables[0];
    }

Answer 1

根据我的经验。只有 excel 97-2003 有效。

VB中的代码！

Private Sub DodajExcel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DodajExcel.Click
OpenFileDialog2.Filter = "Excel Files (*.xls)|*.xls|All Files (*.*)|*.*"
If OpenFileDialog2.ShowDialog = Windows.Forms.DialogResult.OK Then
    Dim XLSPathx As String = OpenFileDialog2.FileName
End If

Dim connectionStringTemplate As String = _
"Provider=Microsoft.ACE.OLEDB.12.0;" + _
"Data Source={0};" + _
"Extended Properties=""Excel 12.0;HDR=Yes;IMEX=1"""
Dim XLSPath As String = OpenFileDialog2.FileName
Dim connectionString As String = String.Format(connectionStringTemplate, XLSPath)
Dim sqlSelect As String = "SELECT * FROM [Arkusz1$];"
' Load the Excel worksheet into a DataTable
Dim workbook As DataSet = New DataSet()
Dim excelAdapter As System.Data.Common.DataAdapter = New System.Data.OleDb.OleDbDataAdapter(sqlSelect, connectionString)
Try
    excelAdapter.Fill(workbook)
    Dim worksheet As DataTable = workbook.Tables(0)
    DataGridView1.DataSource = worksheet


Catch
   End Try

结束子

Answer 2

您的连接字符串中有错字：

Exended Properties=

应该：

Extended Properties=

另外，我建议您对代码进行一些改进，包括正确处理一次性资源：

using (var conn = new OleDbConnection(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\Nick\Desktop\Pricing2.xlsx;Extended Properties=""Excel 12.0 Xml;HDR=YES"";"))
using (var cmd = conn.CreateCommand())
{
    conn.Open();
    cmd.CommandText = "SELECT PartNumber,ShortDescription,RetailPrice,JobberPrice,BasePrice,YourDiscount,YourPrice,LongDescription FROM [Pricing$]";
    using (var adapter = new OleDbDataAdapter(cmd))
    {
        adapter.Fill(ds);
    }
}