Question

是否可以从.NET中的T-SQL存储过程捕获打印输出？

我有很多遗留过程使用print作为errorMessaging的方法。例如，是否可以从以下PROC访问套印“字”？

-- The PROC
CREATE PROC usp_PrintWord AS
    PRINT 'word'

// Some C# Code to would like to pull out 'word'
SqlCommand cmd = new SqlCommand("usp_printWord", TheConnection);
cmd.CommandType = CommandType.StoredProcedure;
// string ProcPrint = ???

Answer 1

您可以通过向连接上的InfoMessage事件添加事件处理程序来完成此操作。

myConnection.InfoMessage += new SqlInfoMessageEventHandler(myConnection_InfoMessage);

void myConnection_InfoMessage(object sender, SqlInfoMessageEventArgs e)
{
    myStringBuilderDefinedAsClassVariable.AppendLine(e.Message);
}

Answer 2

如果您想在LinqPad的输出控制台中捕获打印输出，这非常方便：

SqlConnection conn = new SqlConnection(ConnectionString);
//anonymous function to dump print statements to output console
conn.InfoMessage += (object obj, SqlInfoMessageEventArgs e)=>{
                e.Message.Dump();
            };

Answer 3

要将输出转换为变量：

string printOutput = "";

using (var conn = new SqlConnection(...))
{
    // handle this event to receive the print output
    conn.InfoMessage += (object obj, SqlInfoMessageEventArgs e) => {
        printOutput += e.Message;
    };

    // execute command, etc.
}

Console.Write(printOutput);

在.NET中捕获存储过程打印输出

3 个答案: