在 catch 块中显示特定的错误消息

Question

    try
    {
        DataTable dt = new DataTable();
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["myConnectionString"].ToString());
        SqlDataAdapter sda = new SqlDataAdapter("Select * from CustomeDetails", con);
        sda.Fill(dt);
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
    catch (SqlException d)
    {

       //Display Error Message
    }

How can i display the error message, If there is any error in try block for example, In my Code "Invalid Object name CustomeDetails" is a error. same way I have to display all errors which occurs in try block. I apologize for my English. Note : I have to display all these error messages in web page.

Answer 1

You can loop through .Errors. Might have what you need.

catch (SqlException ex)
{
  Console.WriteLine(ex.Message);
  DisplaySqlErrors(ex);
}


private static void DisplaySqlErrors(SqlException exception)
{
    for (int i = 0; i < exception.Errors.Count; i++)
    {
        Console.WriteLine("Index #" + i + "\n" +
        "Error: " + exception.Errors[i].ToString() + "\n");
    }
}

From

• https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlexception(v=vs.110).aspx
• https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlexception.errors(v=vs.110).aspx