数据类型和C#关系对应

sqlserver与c#中数据类型的对应关系
///
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;
}