标签：row span pad offset toc eal bool bsp tab
(一) C#与SQL Server 2005（或以下版本）：
|
C# |
C#取值 |
SQL Server |
SQL Server取值 |
|
System.DateTime |
|
samlltime |
|
|
System.Object |
|
variant |
|
(二) C#与SQL Server 2008（或以上版本）：
|
C# |
C#取值 |
SQL Server |
SQL Server取值 |
|
System.Boolean |
true/false |
bit |
1/0 |
|
System.SByte |
-128~127 |
|
|
|
System.Byte |
0~255 |
tinyint |
0~255 |
|
System.Int16 |
-32768~32767 |
smallint |
-32768~32767 |
|
System.UInt16 |
0~65535 |
|
|
|
System.Int32 |
-2147483648~2147483647 |
int |
-2147483648~2147483647 |
|
System.UInt32 |
0~4294967295 |
|
|
|
System.Int64 |
-9223372036854775808~ 9223372036854775807L |
bigint |
-9223372036854775808~9223372036854775807 |
|
System.UInt64 |
0~18446744073709551615UL |
|
|
|
System.Single |
|
real |
|
|
System.Double |
|
float |
|
|
System.Decimal |
|
smallmoney |
-214748.3648~214748.3647 |
|
money |
-922337203685477.5808~922337203685477.5807 |
||
|
decimal |
-999999999999999999.49~999999999999999999.49 |
||
|
numeric |
1~38位 |
||
|
System.Char |
|
|
|
|
System.String |
|
char |
1~8000 |
|
varchar |
1~8000 |
||
|
nchar |
1~4000 |
||
|
nvarchar |
1~4000 |
||
|
text |
|
||
|
ntext |
|
||
|
|
|
time |
00:00:00.0000000~23:59:59.9999999 |
|
System.DateTime |
|
date |
0001-01-01~9999-12-31 |
|
smalldatetime |
|
||
|
datetime |
1753-01-01 00:00:00:000~9999-12-31 23:59:59.997 |
||
|
datetime2 |
|
||
|
datetimeoffset |
|
||
|
timestamp |
|
||
|
System.Byte[] |
|
image |
|
|
binary |
|
||
|
varbinary |
|
||
|
System.Guid |
|
uniqueidentifier |
|
|
System.Object |
|
sql_variant |
|
(三) 根据数据库数据类型字符，获取C#中对应的数据类型字符
/// <summary>
/// 将数据库数据类型字符串，转为C#数据类型字符串。
/// </summary>
/// <param name="dbType">数据库数据类型字符串。</param>
/// <returns>C#数据类型字符串。</returns>
private static string DBTypeToCSharpType(string dbType)
{
string cSharpType = string.Empty;
switch (dbType.ToLower())
{
case "bit":
cSharpType = "bool";
break;
case "tinyint":
cSharpType = "byte";
break;
case "smallint":
cSharpType = "short";
break;
case "int":
cSharpType = "int";
break;
case "bigint":
cSharpType = "long";
break;
case "real":
cSharpType = "float";
break;
case "float":
cSharpType = "double";
break;
case "smallmoney":
case "money":
case "decimal":
case "numeric":
cSharpType = "decimal";
break;
case "char":
case "varchar":
case "nchar":
case "nvarchar":
case "text":
case "ntext":
cSharpType = "string";
break;
case "samlltime":
case "date":
case "smalldatetime":
case "datetime":
case "datetime2":
case "datetimeoffset":
case "timestamp":
cSharpType = "System.DateTime";
break;
case "image":
case "binary":
case "varbinary":
cSharpType = "byte[]";
break;
case "uniqueidentifier":
cSharpType = "System.Guid";
break;
case "variant":
case "sql_variant":
cSharpType = "object";
break;
default:
cSharpType = "string";
break;
}
return cSharpType;
}
标签：row span pad offset toc eal bool bsp tab
原文地址：http://www.cnblogs.com/abeam/p/6784542.html
