SqlException.State 属性
定义
从 SQL Server 中获取一个数值错误代码,它表示错误、警告或“未找到数据”消息。Gets a numeric error code from SQL Server that represents an error, warning or "no data found" message. 有关如何将这些值解码的更多信息,请参阅数据库引擎事件和错误。For more information about how to decode these values, see Database Engine Events and Errors.
public:
property System::Byte State { System::Byte get(); };
public byte State { get; }
member this.State : byte
Public ReadOnly Property State As Byte
属性值
表示错误代码的数字。The number representing the error code.
示例
下面的示例显示 SqlError 集合中的每个 SqlErrorCollection 。The following example displays each SqlError within the SqlErrorCollection collection.
using System;
using System.Data;
using System.Data.SqlClient;
using System.Text;
class Program
{
static void Main()
{
string s = GetConnectionString();
ShowSqlException(s);
Console.ReadLine();
}
public static void ShowSqlException(string connectionString)
{
string queryString = "EXECUTE NonExistantStoredProcedure";
StringBuilder errorMessages = new StringBuilder();
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand command = new SqlCommand(queryString, connection);
try
{
command.Connection.Open();
command.ExecuteNonQuery();
}
catch (SqlException ex)
{
for (int i = 0; i < ex.Errors.Count; i++)
{
errorMessages.Append("Index #" + i + "\n" +
"Message: " + ex.Errors[i].Message + "\n" +
"Error Number: " + ex.Errors[i].Number + "\n" +
"LineNumber: " + ex.Errors[i].LineNumber + "\n" +
"Source: " + ex.Errors[i].Source + "\n" +
"Procedure: " + ex.Errors[i].Procedure + "\n");
}
Console.WriteLine(errorMessages.ToString());
}
}
}
static private string GetConnectionString()
{
// To avoid storing the connection string in your code,
// you can retrieve it from a configuration file.
return "Data Source=(local);Initial Catalog=AdventureWorks;"
+ "Integrated Security=SSPI";
}
}
Public Sub ShowSqlException(ByVal connectionString As String)
Dim queryString As String = "EXECUTE NonExistantStoredProcedure"
Dim errorMessages As New StringBuilder()
Using connection As New SqlConnection(connectionString)
Dim command As New SqlCommand(queryString, connection)
Try
command.Connection.Open()
command.ExecuteNonQuery()
Catch ex As SqlException
Dim i As Integer
For i = 0 To ex.Errors.Count - 1
errorMessages.Append("Index #" & i.ToString() & ControlChars.NewLine _
& "Message: " & ex.Errors(i).Message & ControlChars.NewLine _
& "Error Number: " & ex.Errors(i).Number & ControlChars.NewLine _
& "LineNumber: " & ex.Errors(i).LineNumber & ControlChars.NewLine _
& "Source: " & ex.Errors(i).Source & ControlChars.NewLine _
& "Procedure: " & ex.Errors(i).Procedure & ControlChars.NewLine)
Next i
Console.WriteLine(errorMessages.ToString())
End Try
End Using
End Sub
注解
这是 State 属性中第一个的属性的包装 SqlError Errors 。This is a wrapper for the State property of the first SqlError in the Errors property.