Passing parameter to stored procedure in C#

Passing parameter to stored procedure in C#

To pass a parameter to a stored procedure in C#, you can use the SqlCommand class to execute the stored procedure and add parameters to the command object. Here's an example:

using System.Data.SqlClient; // Create a new SqlCommand object with the stored procedure name and connection string SqlCommand cmd = new SqlCommand("MyStoredProcedure", connection); cmd.CommandType = CommandType.StoredProcedure; // Add parameters to the command object cmd.Parameters.AddWithValue("@Parameter1", value1); cmd.Parameters.AddWithValue("@Parameter2", value2); // Add additional parameters as needed // Execute the stored procedure and process the results using (SqlDataReader reader = cmd.ExecuteReader()) { while (reader.Read()) { // Process the results } }

In this example, we create a new SqlCommand object called cmd with the name of the stored procedure and a SqlConnection object called connection. We set the CommandType property of the cmd object to CommandType.StoredProcedure to indicate that we are executing a stored procedure.

We then add parameters to the cmd object using the Parameters.AddWithValue method. We specify the name of the parameter (including the "@" symbol) and the value of the parameter. Note that you can add as many parameters as needed to the cmd object.

Finally, we execute the stored procedure using the cmd.ExecuteReader method, which returns a SqlDataReader object that we can use to process the results of the stored procedure. Inside the while loop, we can access the values returned by the stored procedure using the SqlDataReader methods like GetString, GetInt32, etc.

Examples

  1. "C# SqlCommand parameterized stored procedure example"

    • Description: Learn how to pass parameters to a stored procedure in C# using SqlCommand.
    using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; command.Parameters.AddWithValue("@ParameterName", parameterValue); connection.Open(); command.ExecuteNonQuery(); } }

  2. "C# SqlDataAdapter with stored procedure parameters"

    • Description: Understand how to use SqlDataAdapter with parameters for a stored procedure in C#.
    using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlDataAdapter adapter = new SqlDataAdapter("YourStoredProcedure", connection)) { adapter.SelectCommand.CommandType = CommandType.StoredProcedure; adapter.SelectCommand.Parameters.AddWithValue("@ParameterName", parameterValue); DataSet dataSet = new DataSet(); adapter.Fill(dataSet); } }

  3. "C# stored procedure input parameters with SqlDataReader"

    • Description: Explore using SqlDataReader with input parameters for a stored procedure in C#.
    using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; command.Parameters.AddWithValue("@ParameterName", parameterValue); connection.Open(); using (SqlDataReader reader = command.ExecuteReader()) { while (reader.Read()) { // Process results } } } }

  4. "C# stored procedure output parameters with SqlCommand"

    • Description: Learn how to use output parameters with SqlCommand for a stored procedure in C#.
    using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; command.Parameters.AddWithValue("@InputParameter", inputParameterValue); SqlParameter outputParameter = new SqlParameter("@OutputParameter", SqlDbType.Int); outputParameter.Direction = ParameterDirection.Output; command.Parameters.Add(outputParameter); connection.Open(); command.ExecuteNonQuery(); int result = Convert.ToInt32(outputParameter.Value); } }

  5. "C# SqlClient stored procedure with input and output parameters"

    • Description: Understand how to work with both input and output parameters in a stored procedure using SqlClient in C#.
    using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; command.Parameters.AddWithValue("@InputParameter", inputParameterValue); SqlParameter outputParameter = new SqlParameter("@OutputParameter", SqlDbType.Int); outputParameter.Direction = ParameterDirection.Output; command.Parameters.Add(outputParameter); connection.Open(); command.ExecuteNonQuery(); int result = Convert.ToInt32(outputParameter.Value); } }

  6. "C# stored procedure with table-valued parameters"

    • Description: Explore passing table-valued parameters to a stored procedure in C#.
    using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; DataTable dataTable = new DataTable(); // Populate dataTable with data SqlParameter tableParameter = new SqlParameter("@TableParameter", SqlDbType.Structured); tableParameter.Value = dataTable; command.Parameters.Add(tableParameter); connection.Open(); command.ExecuteNonQuery(); } }

  7. "C# stored procedure with XML parameter"

    • Description: Learn how to pass XML parameters to a stored procedure in C#.
    using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; command.Parameters.AddWithValue("@XmlParameter", xmlStringValue); connection.Open(); command.ExecuteNonQuery(); } }

  8. "C# stored procedure with multiple parameters"

    • Description: Understand how to pass multiple parameters to a stored procedure in C#.
    using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; command.Parameters.AddWithValue("@Param1", value1); command.Parameters.AddWithValue("@Param2", value2); connection.Open(); command.ExecuteNonQuery(); } }

  9. "C# stored procedure with datetime parameter"

    • Description: Explore passing datetime parameters to a stored procedure in C#.
    using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; command.Parameters.AddWithValue("@DateTimeParameter", datetimeValue); connection.Open(); command.ExecuteNonQuery(); } }

  10. "C# stored procedure with dynamic SQL and parameters"

    • Description: Learn how to use dynamic SQL in a stored procedure with parameters in C#.
    using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand command = new SqlCommand("YourDynamicSQLStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; command.Parameters.AddWithValue("@Param1", value1); command.Parameters.AddWithValue("@Param2", value2); connection.Open(); command.ExecuteNonQuery(); } }

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