SQL SERVER与C#中数据类型的对应关系

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/// <summary>
/// 数据库中与C#中的数据类型对照
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
private string ChangeToCSharpType(string type)
{
string reval=string.Empty;
switch(type.ToLower())
{
case "int":
reval= "Int32";
break;
case "text":
reval= "String";
break;
case "bigint":
reval= "Int64";
break;
case "binary":
reval= "System.Byte[]";
break;
case "bit":
reval= "Boolean";
break;
case "char":
reval= "String";
break;
case "datetime":
reval= "System.DateTime";
break;
case "decimal":
reval= "System.Decimal";
break;
case "float":
reval= "System.Double";
break;
case "image":
reval= "System.Byte[]";
break;
case "money":
reval= "System.Decimal";
break;
case "nchar":
reval= "String";
break;
case "ntext":
reval= "String";
break;
case "numeric":
reval= "System.Decimal";
break;
case "nvarchar":
reval= "String";
break;
case "real":
reval= "System.Single";
break;
case "smalldatetime":
reval= "System.DateTime";
break;
case "smallint":
reval= "Int16";
break;
case "smallmoney":
reval= "System.Decimal";
break;
case "timestamp":
reval= "System.DateTime";
break;
case "tinyint":
reval= "System.Byte";
break;
case "uniqueidentifier":
reval= "System.Guid";
break;
case "varbinary":
reval= "System.Byte[]";
break;
case "varchar":
reval= "String";
break;
case "Variant":
reval="Object";
break;
default:
reval= "String";
break;
}
return reval;
}