DataSourceUtil.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 / xsp / System / DynamicData / DynamicData / DataSourceUtil.cs / 1305376 / DataSourceUtil.cs
                        

                        
                            namespace System.Web.DynamicData { 
    using System;
    using System.Collections.Generic;
    using System.Globalization;
    using System.Web.Resources; 
    using System.Web.UI;
    using System.Web.UI.WebControls; 
    using System.Collections; 
    using System.Data;
 
    static class DataSourceUtil {

        private static object s_lock = new object();
        private static Dictionary s_typeToTypeCodeMap; 

        internal static TypeCode TypeCodeFromType(Type type) { 
            if (s_typeToTypeCodeMap == null) { 
                lock (s_lock) {
                    if (s_typeToTypeCodeMap == null) { 

                        //
                        Dictionary typeNameToTypeCode = new Dictionary();
                        typeNameToTypeCode[typeof(Boolean)] = TypeCode.Boolean; 
                        typeNameToTypeCode[typeof(String)] = TypeCode.String;
                        typeNameToTypeCode[typeof(Byte)] = TypeCode.Byte; 
                        typeNameToTypeCode[typeof(Int16)] = TypeCode.Int16; 
                        typeNameToTypeCode[typeof(Int32)] = TypeCode.Int32;
                        typeNameToTypeCode[typeof(Int64)] = TypeCode.Int64; 
                        typeNameToTypeCode[typeof(Single)] = TypeCode.Single;
                        typeNameToTypeCode[typeof(Double)] = TypeCode.Double;
                        typeNameToTypeCode[typeof(Decimal)] = TypeCode.Decimal;
                        typeNameToTypeCode[typeof(DateTime)] = TypeCode.DateTime; 
                        typeNameToTypeCode[typeof(Char)] = TypeCode.Char;
 
                        // We don't support columns of type 'sqlvariant', which show up as Object 
                        //
                        typeNameToTypeCode[typeof(Object)] = TypeCode.DBNull; 

                        // We don't support byte arrays.  This include columns of type 'timestamp'
                        typeNameToTypeCode[typeof(Byte[])] = TypeCode.DBNull;
 
                        // Use Object for Guid's (though we need to do some special processing)
                        typeNameToTypeCode[typeof(Guid)] = TypeCode.Object; 
 
                        s_typeToTypeCodeMap = typeNameToTypeCode;
                    } 
                }
            }

            // If it's an Nullable, work with T instead 
            type = Misc.RemoveNullableFromType(type);
 
            TypeCode typeCode; 
            if (s_typeToTypeCodeMap.TryGetValue(type, out typeCode))
                return typeCode; 

            return TypeCode.Object;
        }
 
        internal static void SetParameterTypeCodeAndDbType(Parameter parameter, MetaColumn column) {
            // If it's a Guid, use a DbType, since TypeCode doesn't support it.  For everything else, use TypeCode 
            if (column.ColumnType == typeof(Guid)) { 
                parameter.DbType = DbType.Guid;
            } 
            else {
                parameter.Type = column.TypeCode;
            }
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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