以下代码用于将数据从excel读取到gridview中。OleDbAdapter在查询中不识别'@'
String cusid1 = maskedTextBox1.Text.ToString();
string s = "provider=Microsoft.Jet.OLEDB.4.0;data source=c:xxx.xls;Extended Properties=Excel 8.0;";
OleDbConnection con = new OleDbConnection(s); // connection string
con.Open();
string strQuery = "select * from [test$] where cusid = @cusid1";
OleDbDataAdapter da = new OleDbDataAdapter(strQuery, con);
//Or Use OleDbCommand
DataSet ds = new DataSet();
da.Fill(ds);
dataGridView1.DataSource = ds.Tables[0];
conn.Open();
但当代替@cusid1
像select * from [test$] where cusid=1
指定一个数字,我收到正确的输出。如果我在查询中使用@cusid
,则会出现此错误:
No value given for one or more required parameters.
您不添加'@ cusid1'参数到命令的任何地方 – user2711965 2014-09-24 13:32:05
你预计到设置'@ cusid1值'' – 2014-09-24 13:33:36