你需要给参数赋值,例如:
String selectCmd = "select * from Authors where state = @State"; SqlConnection myConnection = new SqlConnection("server=(local)\\NetSDK;database=pubs;Trusted_Connection=yes");
SqlDataAdapter myCommand = new SqlDataAdapter(selectCmd, myConnection); myCommand.SelectCommand.Parameters.Add(new SqlParameter("@State", SqlDbType.NVarChar, 2));
myCommand.SelectCommand.Parameters["@State"].Value = MySelect.Value;
String selectCmd = "select * from Authors where state = @State"; SqlConnection myConnection = new SqlConnection("server=(local)\\NetSDK;database=pubs;Trusted_Connection=yes");
SqlDataAdapter myCommand = new SqlDataAdapter(selectCmd, myConnection); myCommand.SelectCommand.Parameters.Add(new SqlParameter("@State", SqlDbType.NVarChar, 2));
myCommand.SelectCommand.Parameters["@State"].Value = MySelect.Value;
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