SQL数据类型和C#数据类型间的转换

<Language From="SQL" To="C#">
   <Type From="bigint" To="long" />
    <Type From="binary" To="object" />
    <Type From="bit" To="bool" />
    <Type From="char" To="string" />
    <Type From="datetime" To="DateTime" />
    <Type From="decimal" To="decimal" />
    <Type From="float" To="double" />
    <Type From="image" To="byte[]" />
    <Type From="int" To="int" />
    <Type From="money" To="decimal" />
    <Type From="nchar" To="string" />
    <Type From="ntext" To="string" />
    <Type From="numeric" To="decimal" />
    <Type From="nvarchar" To="string" />
    <Type From="real" To="float" />
    <Type From="smalldatetime" To="DateTime" />
    <Type From="smallint" To="short" />
    <Type From="smallmoney" To="decimal" />
    <Type From="text" To="string" />
    <Type From="timestamp" To="byte[]" />
    <Type From="tinyint" To="byte" />
    <Type From="uniqueidentifier" To="Guid" />
    <Type From="varbinary" To="byte[]" />
    <Type From="varchar" To="string" />
    <Type From="xml" To="string" />
    <Type From="sql_variant" To="object" />
</Language> 
<Language From="SQL" To="C# System Types">
   <Type From="bigint" To="System.Int64" />
    <Type From="binary" To="System.Object" />
    <Type From="bit" To="System.Boolean" />
    <Type From="char" To="System.String" />
    <Type From="datetime" To="System.DateTime" />
    <Type From="decimal" To="System.Decimal" />
    <Type From="float" To="System.Double" />
    <Type From="image" To="System.Byte[]" />
    <Type From="int" To="System.Int32" />
    <Type From="money" To="System.Decimal" />
    <Type From="nchar" To="System.String" />
    <Type From="ntext" To="System.String" />
    <Type From="numeric" To="System.Decimal" />
    <Type From="nvarchar" To="System.String" />
    <Type From="real" To="System.Single" />
    <Type From="smalldatetime" To="System.DateTime" />
    <Type From="smallint" To="System.Int16" />
    <Type From="smallmoney" To="System.Decimal" />
    <Type From="text" To="System.String" />
    <Type From="timestamp" To="System.Byte[]" />
    <Type From="tinyint" To="System.Byte" />
    <Type From="uniqueidentifier" To="System.Guid" />
    <Type From="varbinary" To="System.Byte[]" />
    <Type From="varchar" To="System.String" />
    <Type From="xml" To="System.String" />
    <Type From="sql_variant" To="System.Object" />
</Language>

<DbTarget From="SQL" To="SqlClient">
   <Type From="bigint" To="SqlDbType.BigInt" />
    <Type From="binary" To="SqlDbType.Binary" />
    <Type From="bit" To="SqlDbType.Bit" />
    <Type From="char" To="SqlDbType.Char" />
    <Type From="datetime" To="SqlDbType.DateTime" />
    <Type From="decimal" To="SqlDbType.Decimal" />
    <Type From="float" To="SqlDbType.Float" />
    <Type From="image" To="SqlDbType.Image" />
    <Type From="int" To="SqlDbType.Int" />
    <Type From="money" To="SqlDbType.Money" />
    <Type From="nchar" To="SqlDbType.NChar" />
    <Type From="ntext" To="SqlDbType.NText" />
    <Type From="numeric" To="SqlDbType.Decimal" />
    <Type From="nvarchar" To="SqlDbType.NVarChar" />
    <Type From="real" To="SqlDbType.Real" />
    <Type From="smalldatetime" To="SqlDbType.SmallDateTime" />
    <Type From="smallint" To="SqlDbType.SmallInt" />
    <Type From="smallmoney" To="SqlDbType.SmallMoney" />
    <Type From="text" To="SqlDbType.Text" />
    <Type From="timestamp" To="SqlDbType.Timestamp" />
    <Type From="tinyint" To="SqlDbType.TinyInt" />
    <Type From="uniqueidentifier" To="SqlDbType.UniqueIdentifier" />
    <Type From="varbinary" To="SqlDbType.VarBinary" />
    <Type From="varchar" To="SqlDbType.VarChar" />
    <Type From="xml" To="SqlDbType.Xml" />
    <Type From="sql_variant" To="SqlDbType.Variant" />
</DbTarget>

<DbTarget From="SQLCE" To="SqlServerCe">
   <Type From="bigint" To="SqlDbType.BigInt" />
    <Type From="binary" To="SqlDbType.Binary" />
    <Type From="bit" To="SqlDbType.Bit" />
    <Type From="char" To="SqlDbType.Char" />
    <Type From="datetime" To="SqlDbType.DateTime" />
    <Type From="decimal" To="SqlDbType.Decimal" />
    <Type From="float" To="SqlDbType.Float" />
    <Type From="image" To="SqlDbType.Image" />
    <Type From="int" To="SqlDbType.Int" />
    <Type From="money" To="SqlDbType.Money" />
    <Type From="nchar" To="SqlDbType.NChar" />
    <Type From="ntext" To="SqlDbType.NText" />
    <Type From="numeric" To="SqlDbType.Decimal" />
    <Type From="nvarchar" To="SqlDbType.NVarChar" />
    <Type From="real" To="SqlDbType.Real" />
    <Type From="smalldatetime" To="SqlDbType.SmallDateTime" />
    <Type From="smallint" To="SqlDbType.SmallInt" />
    <Type From="smallmoney" To="SqlDbType.SmallMoney" />
    <Type From="text" To="SqlDbType.Text" />
    <Type From="timestamp" To="SqlDbType.Timestamp" />
    <Type From="tinyint" To="SqlDbType.TinyInt" />
    <Type From="uniqueidentifier" To="SqlDbType.UniqueIdentifier" />
    <Type From="varbinary" To="SqlDbType.VarBinary" />
    <Type From="varchar" To="SqlDbType.VarChar" />
    <Type From="xml" To="SqlDbType.Xml" />
    <Type From="sql_variant" To="SqlDbType.Variant" />
</DbTarget>