SqlVersion.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / SqlClient / SqlVersion.cs / 1305376 / SqlVersion.cs
                        

                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner  [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 

using System.Collections.Generic; 
using System.Text;
using System.Globalization;
using System.Data;
using System.Data.Common; 
using System.Data.SqlClient;
 
namespace System.Data.SqlClient 
{
    ///  
    /// This enum describes the current server version
    /// 
    internal enum SqlVersion
    { 
        /// 
        /// Sql Server 8 
        ///  
        Sql8 = 80,
 
        /// 
        /// Sql Server 9
        /// 
        Sql9 = 90, 

        ///  
        /// Sql Server 10 
        /// 
        Sql10 = 100, 

        // higher versions go here
    }
 
    /// 
    /// This class is a simple utility class that determines the sql version from the 
    /// connection 
    /// 
    internal static class SqlVersionUtils 
    {
        /// 
        /// Get the SqlVersion from the connection. Returns one of Sql8, Sql9, Sql10
        ///  
        /// current sql connection
        /// Sql Version for the current connection 
        internal static SqlVersion GetSqlVersion(SqlConnection connection) 
        {
            if (connection.IsYukonOrNewer) 
            {
                if (connection.IsKatmaiOrNewer)
                {
                    return SqlVersion.Sql10; 
                }
                else 
                { 
                    return SqlVersion.Sql9;
                } 
            }
            else
            {
                System.Diagnostics.Debug.Assert(connection.ServerVersion.StartsWith("08.", StringComparison.Ordinal), 
                                                "not version 8");
                return SqlVersion.Sql8; 
            } 
        }
 
        internal static string GetVersionHint(SqlVersion version)
        {
            switch(version)
            { 
                case SqlVersion.Sql8:
                    return SqlProviderManifest.TokenSql8; 
 
                case SqlVersion.Sql9:
                    return SqlProviderManifest.TokenSql9; 

                case SqlVersion.Sql10:
                    return SqlProviderManifest.TokenSql10;
 
                default:
                    throw EntityUtil.Argument(Entity.Strings.UnableToDetermineStoreVersion); 
            } 
        }
 
        internal static SqlVersion GetSqlVersion(string versionHint)
        {
            if (!string.IsNullOrEmpty(versionHint))
            { 
                switch (versionHint)
                { 
                    case SqlProviderManifest.TokenSql8: 
                        return SqlVersion.Sql8;
 
                    case SqlProviderManifest.TokenSql9:
                        return SqlVersion.Sql9;

                    case SqlProviderManifest.TokenSql10: 
                        return SqlVersion.Sql10;
                } 
            } 

            throw EntityUtil.Argument(Entity.Strings.UnableToDetermineStoreVersion); 
        }

        internal static bool IsPreKatmai(SqlVersion sqlVersion)
        { 
            return sqlVersion == SqlVersion.Sql8 || sqlVersion == SqlVersion.Sql9;
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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