更新查询无法在C＃中工作

Question

use MyModule

Answer 1

添加.ExecuteNonQuery来执行查询，并添加try-catch-block来捕获任何异常：

try
{
    ...
    SqlCommand com = new SqlCommand(queryStr, conn);
    com.ExecuteNonQuery();
    conn.Close();
    ...
}
catch (Exception ex)
{
    MessageBox.Show(ex.ToString());
}