71 lines
3.0 KiB
C#
71 lines
3.0 KiB
C#
namespace System.Web.DynamicData {
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Web.Resources;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using System.Collections;
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using System.Data;
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static class DataSourceUtil {
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private static object s_lock = new object();
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private static Dictionary<Type, TypeCode> s_typeToTypeCodeMap;
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internal static TypeCode TypeCodeFromType(Type type) {
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if (s_typeToTypeCodeMap == null) {
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lock (s_lock) {
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if (s_typeToTypeCodeMap == null) {
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//
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Dictionary<Type, TypeCode> typeNameToTypeCode = new Dictionary<Type, TypeCode>();
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typeNameToTypeCode[typeof(Boolean)] = TypeCode.Boolean;
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typeNameToTypeCode[typeof(String)] = TypeCode.String;
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typeNameToTypeCode[typeof(Byte)] = TypeCode.Byte;
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typeNameToTypeCode[typeof(Int16)] = TypeCode.Int16;
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typeNameToTypeCode[typeof(Int32)] = TypeCode.Int32;
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typeNameToTypeCode[typeof(Int64)] = TypeCode.Int64;
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typeNameToTypeCode[typeof(Single)] = TypeCode.Single;
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typeNameToTypeCode[typeof(Double)] = TypeCode.Double;
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typeNameToTypeCode[typeof(Decimal)] = TypeCode.Decimal;
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typeNameToTypeCode[typeof(DateTime)] = TypeCode.DateTime;
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typeNameToTypeCode[typeof(Char)] = TypeCode.Char;
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// We don't support columns of type 'sqlvariant', which show up as Object
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//
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typeNameToTypeCode[typeof(Object)] = TypeCode.DBNull;
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// We don't support byte arrays. This include columns of type 'timestamp'
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typeNameToTypeCode[typeof(Byte[])] = TypeCode.DBNull;
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// Use Object for Guid's (though we need to do some special processing)
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typeNameToTypeCode[typeof(Guid)] = TypeCode.Object;
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s_typeToTypeCodeMap = typeNameToTypeCode;
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}
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}
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}
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// If it's an Nullable<T>, work with T instead
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type = Misc.RemoveNullableFromType(type);
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TypeCode typeCode;
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if (s_typeToTypeCodeMap.TryGetValue(type, out typeCode))
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return typeCode;
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return TypeCode.Object;
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}
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internal static void SetParameterTypeCodeAndDbType(Parameter parameter, MetaColumn column) {
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// If it's a Guid, use a DbType, since TypeCode doesn't support it. For everything else, use TypeCode
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if (column.ColumnType == typeof(Guid)) {
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parameter.DbType = DbType.Guid;
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}
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else {
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parameter.Type = column.TypeCode;
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}
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}
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}
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}
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