SQL SERVER與C#的資料型別對應表
阿新 • • 發佈：2018-11-24
| 序號 | 類別 | SQLServer | C Sharp | 備註 |
| 1 | 整數 | bit | Boolean | True轉換為1False轉換為0 |
| 2 | tinyint | Byte | C Sharp 資料型別都位於System名稱空間 | |
| 3 | smallint | Int16 | ||
| 4 | int | Int32 | ||
| 5 | bigint | Int64 | ||
| 6 | smallmoney | Decimal | ||
| 7 | money | Decimal | ||
| 8 | numeric | Decimal | ||
| 9 | decimal | Decimal | ||
| 10 | 浮點數 | float | Double | |
| 11 | real | Single | ||
| 12 | 日期和時間 | smalldatetime | DateTime | |
| 13 | datetime | DateTime | ||
| 14 | timestamp | DateTime | ||
| 15 | 字串 | char | String | |
| 16 | text | String | ||
| 17 | varchar | String | ||
| 18 | nchar | String | ||
| 19 | ntext | String | ||
| 20 | nvarchar | String | ||
| 21 | 二進位制資料 | binary | Byte[] | |
| 22 | varbinary | Byte[] | ||
| 23 | image | Byte[] | ||
| 24 | 其他 | uniqueidentifier | Guid | |
| 25 | Variant | Object |
/// <summary> /// 資料庫中與c#中的資料型別對照 /// </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; }