How to get the SQL Server "PRINT" value in C#

How to get the SQL Server "PRINT" value in C#

To capture the PRINT statements from SQL Server in C#, you can use the SqlConnection.InfoMessage event. The SqlConnection.InfoMessage event is raised whenever a message (including PRINT statements) is sent by SQL Server during the execution of a batch or stored procedure.

Here's how you can capture PRINT statements in C#:

using System; using System.Data.SqlClient; class Program { static void Main() { string connectionString = "your_connection_string_here"; string sqlQuery = "PRINT 'This is a PRINT statement'; SELECT 42 AS Result"; using (SqlConnection connection = new SqlConnection(connectionString)) { connection.InfoMessage += Connection_InfoMessage; connection.Open(); using (SqlCommand command = new SqlCommand(sqlQuery, connection)) { SqlDataReader reader = command.ExecuteReader(); while (reader.Read()) { // Process the SELECT query result here int result = reader.GetInt32(reader.GetOrdinal("Result")); Console.WriteLine("Result: " + result); } } } } static void Connection_InfoMessage(object sender, SqlInfoMessageEventArgs e) { // e.Message contains the message sent by SQL Server (including PRINT statements) Console.WriteLine("SQL Server Message: " + e.Message); } }

In this example, the SqlConnection.InfoMessage event is subscribed to the Connection_InfoMessage method, which will be called whenever a message is sent by SQL Server. The InfoMessage event provides an SqlInfoMessageEventArgs object, and the e.Message property contains the message sent by SQL Server, including PRINT statements.

When you execute the SQL query with the SqlCommand.ExecuteReader() method, any PRINT statements in the query will trigger the InfoMessage event, and the message will be displayed in the console.

Please make sure to replace "your_connection_string_here" with your actual SQL Server connection string and adapt the sqlQuery to your specific SQL query or stored procedure call.

Examples

  1. "C# capture PRINT output from SQL Server stored procedure"

    • Code:
      using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); SqlCommand command = new SqlCommand("YourStoredProcedure", connection); command.CommandType = CommandType.StoredProcedure; var sqlInfo = new StringBuilder(); using (SqlDataReader reader = command.ExecuteReader()) { do { while (reader.Read()) { sqlInfo.AppendLine(reader["OutputColumn"].ToString()); } } while (reader.NextResult()); } string printOutput = sqlInfo.ToString(); Console.WriteLine(printOutput); }
    • Description: Executes a stored procedure and captures the PRINT statements or other output messages from SQL Server using a StringBuilder.

  2. "C# get PRINT value from SQL Server query"

    • Code:
      using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); SqlCommand command = new SqlCommand("YourQuery; PRINT 'Printed Value';", connection); SqlInfoMessageEventHandler handler = (sender, e) => { Console.WriteLine(e.Message); }; connection.InfoMessage += handler; command.ExecuteNonQuery(); connection.InfoMessage -= handler; }
    • Description: Executes a SQL query with a PRINT statement and captures the printed value using the InfoMessage event.

  3. "C# retrieve SQL Server PRINT output from stored procedure"

    • Code:
      using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); SqlCommand command = new SqlCommand("YourStoredProcedure", connection); command.CommandType = CommandType.StoredProcedure; SqlParameter printOutput = new SqlParameter("@PrintOutput", SqlDbType.NVarChar, -1); printOutput.Direction = ParameterDirection.Output; command.Parameters.Add(printOutput); command.ExecuteNonQuery(); string printedValue = printOutput.Value.ToString(); Console.WriteLine(printedValue); }
    • Description: Modifies the stored procedure to use an output parameter for the PRINT value and captures it in C# after executing the stored procedure.

  4. "C# capture PRINT output from SQL Server query with SqlCommand"

    • Code:
      using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); SqlCommand command = new SqlCommand("YourQuery; PRINT 'Printed Value';", connection); SqlInfoMessageEventHandler handler = (sender, e) => { Console.WriteLine(e.Message); }; connection.InfoMessage += handler; command.ExecuteNonQuery(); connection.InfoMessage -= handler; }
    • Description: Executes a SQL query with a PRINT statement and captures the printed value using the InfoMessage event on the SqlConnection.

  5. "C# get SQL Server PRINT output from stored procedure with ExecuteReader"

    • Code:
      using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); SqlCommand command = new SqlCommand("YourStoredProcedure", connection); command.CommandType = CommandType.StoredProcedure; using (SqlDataReader reader = command.ExecuteReader()) { do { while (reader.Read()) { Console.WriteLine(reader[0]); } } while (reader.NextResult()); } }
    • Description: Executes a stored procedure using ExecuteReader and captures the PRINT output from each result set.

  6. "C# capture SQL Server PRINT output with SqlDataAdapter"

    • Code:
      using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); SqlDataAdapter adapter = new SqlDataAdapter("YourQuery; PRINT 'Printed Value';", connection); SqlInfoMessageEventHandler handler = (sender, e) => { Console.WriteLine(e.Message); }; connection.InfoMessage += handler; adapter.SelectCommand.ExecuteNonQuery(); connection.InfoMessage -= handler; }
    • Description: Uses SqlDataAdapter to execute a SQL query with a PRINT statement and captures the printed value using the InfoMessage event.

  7. "C# store SQL Server PRINT value in variable with SqlDataReader"

    • Code:
      using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); SqlCommand command = new SqlCommand("YourQuery; PRINT 'Printed Value';", connection); using (SqlDataReader reader = command.ExecuteReader()) { while (reader.Read()) { string printedValue = reader[0].ToString(); Console.WriteLine(printedValue); } } }
    • Description: Executes a SQL query with a PRINT statement using SqlDataReader and stores the printed value in a variable.

  8. "C# get SQL Server PRINT output with ExecuteScalar"

    • Code:
      using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); SqlCommand command = new SqlCommand("YourQuery; PRINT 'Printed Value';", connection); string printedValue = command.ExecuteScalar().ToString(); Console.WriteLine(printedValue); }
    • Description: Executes a SQL query with a PRINT statement using ExecuteScalar and retrieves the printed value.

  9. "C# capture SQL Server PRINT output from stored procedure with DataTable"

    • Code:
      using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); SqlDataAdapter adapter = new SqlDataAdapter("YourStoredProcedure", connection); DataTable dataTable = new DataTable(); SqlInfoMessageEventHandler handler = (sender, e) => { Console.WriteLine(e.Message); }; connection.InfoMessage += handler; adapter.Fill(dataTable); connection.InfoMessage -= handler; }
    • Description: Utilizes SqlDataAdapter and DataTable to execute a stored procedure and capture PRINT output using the InfoMessage event.

  10. "C# get SQL Server PRINT output from stored procedure with ExecuteNonQuery"

    • Code:
      using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); SqlCommand command = new SqlCommand("YourStoredProcedure; PRINT 'Printed Value';", connection); SqlInfoMessageEventHandler handler = (sender, e) => { Console.WriteLine(e.Message); }; connection.InfoMessage += handler; command.ExecuteNonQuery(); connection.InfoMessage -= handler; }
    • Description: Executes a stored procedure with ExecuteNonQuery and captures the PRINT output using the InfoMessage event.

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