问题描述

C#中数据库删除按钮中在下面update语句中显示数据库查询过于复杂

string connstr = "Provider=Microsoft.Jet.OleDb.4.0;";
connstr += @"Data Source=GEARCNC.mdb";

        OleDbConnection tempconn = null;

        try
        {
            if (MessageBox.Show("确定删除这一项吗？", "confirm Message", MessageBoxButtons.OKCancel) == DialogResult.OK)
            {

                tempconn = new OleDbConnection(connstr);

                OleDbDataAdapter GrindingWheelInformationDA = new OleDbDataAdapter("select * from GrindingWheelInformation order by 砂轮名称", tempconn);
                DataSet ds = new DataSet();
                GrindingWheelInformationDA.Fill(ds, "GrindingWheelInformation");
                int hang = this.listView1.SelectedIndices[0];
                DataRow dr = ds.Tables["GrindingWheelInformation"].Rows[hang];
                dr.Delete();
                OleDbCommandBuilder builder = new OleDbCommandBuilder(GrindingWheelInformationDA);
                GrindingWheelInformationDA.Update(ds, "GrindingWheelInformation");//这边报错，提示数据库查询过于复杂

                listView1.Items.Remove(listView1.SelectedItems[0]);
                MessageBox.Show("删除完毕！！！");
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show("请选中一行需要删除的数据！");

        }
        finally
        {
            tempconn.Close();

        }

解决方案

你得把update这个方法贴出来呀，要不怎么看

解决方案二：

select * from GrindingWheelInformation order by 砂轮名称
这句SQL很简单啊？