Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://docs.microsoft.com/en-us/dotnet/api/microsoft.data.sqlclient.sqlcommand.parameters below:

SqlCommand.Parameters Property (Microsoft.Data.SqlClient) | Microsoft Learn

public:
 property Microsoft::Data::SqlClient::SqlParameterCollection ^ Parameters { Microsoft::Data::SqlClient::SqlParameterCollection ^ get(); };

public Microsoft.Data.SqlClient.SqlParameterCollection Parameters { get; }

member this.Parameters : Microsoft.Data.SqlClient.SqlParameterCollection

Public ReadOnly Property Parameters As SqlParameterCollection

The parameters of the Transact-SQL statement or stored procedure. The default is an empty collection.

The following example demonstrates how to create a SqlCommand and add parameters to the SqlParameterCollection.

using System;
using System.Data;
using Microsoft.Data.SqlClient;


class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        string demo = @"<StoreSurvey xmlns=""http://schemas.microsoft.com/sqlserver/2004/07/adventure-works/StoreSurvey""><AnnualSales>1500000</AnnualSales><AnnualRevenue>150000</AnnualRevenue><BankName>Primary International</BankName><BusinessType>OS</BusinessType><YearOpened>1974</YearOpened><Specialty>Road</Specialty><SquareFeet>38000</SquareFeet><Brands>3</Brands><Internet>DSL</Internet><NumberEmployees>40</NumberEmployees></StoreSurvey>";
        Int32 id = 3;
        UpdateDemographics(id, demo, connectionString);
        Console.ReadLine();
    }
    private static void UpdateDemographics(Int32 customerID,
        string demoXml, string connectionString)
    {
        // Update the demographics for a store, which is stored 
        // in an xml column. 
        string commandText = "UPDATE Sales.Store SET Demographics = @demographics "
            + "WHERE CustomerID = @ID;";

        using (SqlConnection connection = new SqlConnection(connectionString))
        {
            SqlCommand command = new SqlCommand(commandText, connection);
            command.Parameters.Add("@ID", SqlDbType.Int);
            command.Parameters["@ID"].Value = customerID;

            // Use AddWithValue to assign Demographics.
            // SQL Server will implicitly convert strings into XML.
            command.Parameters.AddWithValue("@demographics", demoXml);

            try
            {
                connection.Open();
                Int32 rowsAffected = command.ExecuteNonQuery();
                Console.WriteLine("RowsAffected: {0}", rowsAffected);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
    }

The following example demonstrates how to create a SqlCommand and add parameters to the SqlParameterCollection.

using System;
using System.Data;
using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        string demo = @"<StoreSurvey xmlns=""http://schemas.microsoft.com/sqlserver/2004/07/adventure-works/StoreSurvey""><AnnualSales>1500000</AnnualSales><AnnualRevenue>150000</AnnualRevenue><BankName>Primary International</BankName><BusinessType>OS</BusinessType><YearOpened>1974</YearOpened><Specialty>Road</Specialty><SquareFeet<38000</SquareFeet><Brands>3</Brands><Internet>DSL</Internet><NumberEmployees>40</NumberEmployees></StoreSurvey>";
        Int32 id = 3;
        UpdateDemographics(id, demo, connectionString);
        Console.ReadLine();
    }
    private static void UpdateDemographics(Int32 customerID,
        string demoXml, string connectionString)
    {
        // Update the demographics for a store, which is stored 
        // in an xml column. 
        string commandText = "UPDATE Sales.Store SET Demographics = @demographics "
            + "WHERE CustomerID = @ID;";

        using (SqlConnection connection = new SqlConnection(connectionString))
        {
            SqlCommand command = new SqlCommand(commandText, connection);
            command.Parameters.Add("@ID", SqlDbType.Int);
            command.Parameters["@ID"].Value = customerID;

            // Use AddWithValue to assign Demographics.
            // SQL Server will implicitly convert strings into XML.
            command.Parameters.AddWithValue("@demographics", demoXml);

            try
            {
                connection.Open();
                Int32 rowsAffected = command.ExecuteNonQuery();
                Console.WriteLine("RowsAffected: {0}", rowsAffected);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
    }

    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";
    }
}

The Microsoft .NET Framework Data Provider for SQL Server does not support the question mark (?) placeholder for passing parameters to a SQL Statement or a stored procedure called by a command of CommandType.Text. In this case, named parameters must be used. For example:

SELECT * FROM Customers WHERE CustomerID = @CustomerID

Note

If the parameters in the collection do not match the requirements of the query to be executed, an error may result.

For more information, see Configuring parameters.

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4