＆＃34;给定的ColumnMapping与源或目标中的任何列都不匹配＆＃34;使用C＃将Excel导入SQL Server

Question

我收到错误

  

给定的ColumnMapping与源或目标

中的任何列都不匹配

使用以下代码

private void button1_Click_1(object sender, EventArgs e)
{
    of1.Filter = "Excel Files|*.xls;*.xlsx;*.xlsm";

    if ((of1.ShowDialog()) == System.Windows.Forms.DialogResult.OK)
    {
        imagepath = of1.FileName; //file path
        textBox1.Text = imagepath.ToString();
    }
}

private void loadbtn_Click(object sender, EventArgs e)
{
    string ssqltable = comboBox1.GetItemText(comboBox1.SelectedItem);
    string myexceldataquery = "select * from ["+ ssqltable + "$]";

    try
    {
        OleDbConnection oconn = new OleDbConnection(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source="+imagepath+";Extended Properties='Excel 12.0 Xml; HDR=YES;IMEX=1;';");
        string ssqlconnectionstring = "Data Source=.;Initial Catalog=Bioxcell;Integrated Security=true";

        OleDbCommand oledbcmd = new OleDbCommand(myexceldataquery, oconn);
        oconn.Open();

        OleDbDataReader dr = oledbcmd.ExecuteReader();

        SqlBulkCopy bulkcopy = new SqlBulkCopy(ssqlconnectionstring);
        bulkcopy.DestinationTableName = ssqltable;

        while (dr.Read())
        {
            bulkcopy.WriteToServer(dr);
        }

        oconn.Close();
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.ToString());
    }

    /* DisplayingData DD = new DisplayingData();
    DD.Show();*/
}

我认为SQL Server区分大小写，我复制了相同的列名，但错误相同..

有什么方法吗？

Answer 1

像这样使用SqlBulkCopy.ColumnMapping

for (int i = 0; i < dr.FieldCount; i++) {
    bulkcopy.ColumnMappings.Add(i, i);
}

我根据你的图片创建了一个测试表和一个测试文件。它对我来说很好，但只会添加第一行数据。

也许您应该使用DataTable并再试一次：

DataTable dt = new DataTable();
dt.Load(oledbcmd.ExecuteReader());
SqlBulkCopy bulkcopy = new SqlBulkCopy(ssqlconnectionstring);
bulkcopy.DestinationTableName = ssqltable;
for(int i = 0; i < dt.Columns.Count; i++){
    bulkcopy.ColumnMappings.Add(i,i);
}
bulkcopy.WriteToServer(dt);

当我尝试将所有测试行添加到数据库中时。