数据库SQL SServer与C#中数据类型的对应关系

数据库

C#程序

int

int32

text

string

bigint

int64

binary

System.Byte[]

bit

Boolean

char

string

datetime

System.DateTime

decimal

System.Decimal

float

System.Double

image

System.Byte[]

money

System.Decimal

nchar

String

ntext

String

numeric

System.Decimal

nvarchar

String

real

System.Single

smalldatetime

System.DateTime

smallint

Int16

smallmoney

System.Decimal

timestamp

System.DateTime

tinyint

System.Byte

varbinary

System.Byte[]

varchar

String

Variant

Object

unique identifier

System.Guid

 

可以写写成一个方法进行转换 

/// <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;

}

 

 

posted on 2010-07-01 19:48  黄兆张's Blog  阅读(4276)  评论(0编辑  收藏  举报

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