How Can I Capture Print Output from T-SQL Stored Procedures in .NET?

Get stored procedure printout in .NET

Capturing printout of T-SQL stored procedures in .NET can help understand error logs and debugging information. This is especially useful when dealing with legacy stored procedures that rely on PRINT statements for messaging.

To access printout in C#, you can use the following methods:

1. Add event handler:

   • Subscribe to the InfoMessage event on the connection object. This event is fired whenever the database generates an information message (including a print statement).

2. Handling events:

   • Define an event handler method (for example, myConnection_InfoMessage) to handle InfoMessageEventArgs. This method allows you to retrieve and process printout.

3. Retrieve printout:

   • In the event handler, you can access the printed message using the e.Message property. This property contains the text output using the PRINT statement.

Code example:

<code class="language-csharp">// 向InfoMessage事件添加事件处理程序
myConnection.InfoMessage += new SqlInfoMessageEventHandler(myConnection_InfoMessage);

// 定义事件处理程序以捕获打印输出
void myConnection_InfoMessage(object sender, SqlInfoMessageEventArgs e)
{
    // 检索打印输出
    string procPrint = e.Message;
    //  在此处添加您希望对procPrint进行的操作，例如记录到日志文件或显示在UI上
}</code>

Using this method, you can capture the printout of a stored procedure, allowing you to analyze error messages and debug your application more efficiently.

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