Class TypedDataRowExtensions

Inheritance

System.Object

TypedDataRowExtensions

Inherited Members

System.Object.ToString()

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

Namespace: Mediachase.Commerce.Extensions

Assembly: Mediachase.Commerce.dll

Version: 10.8.0

Syntax

public static class TypedDataRowExtensions

Methods

Get<TRow, TValue>(TRow, Expression<Func<TRow, TValue>>)

Gets the property value defined in property from the instance row.

Declaration

public static TValue Get<TRow, TValue>(this TRow row, Expression<Func<TRow, TValue>> property)
    where TRow : DataRow

Parameters

Type	Name	Description
TRow	row	The instance to read the property from.
System.Linq.Expressions.Expression<System.Func<TRow, TValue>>	property	An System.Linq.Expressions.Expression defining the property to read, e.g. 'x => x.MyProp' to read the property 'MyProp' from `row`.

Returns

Type	Description
TValue	The property value, with fallback to the default of `TValue` if the Is[PropertyName]Null() method of `TRow` exists and returns `true`.

Type Parameters

Name	Description
TRow	The typed System.Data.DataRow.
TValue	The property value type.

Set<TRow, TValue>(TRow, Expression<Func<TRow, TValue>>, TValue)

Sets the property value defined in property on the instance row if it doesn't already have the same value. This avoids marking the data row as modified if the value hasn't changed.

Declaration

public static TRow Set<TRow, TValue>(this TRow row, Expression<Func<TRow, TValue>> property, TValue value)
    where TRow : DataRow

Parameters

Type	Name	Description
TRow	row	The instance to set the property on.
System.Linq.Expressions.Expression<System.Func<TRow, TValue>>	property	An System.Linq.Expressions.Expression defining the property to set, e.g. 'x => x.MyProp' to set the property 'MyProp' from `row`.
TValue	value	The property value to set. If the System.Data.DataRow.RowState of `row` is System.Data.DataRowState.Unchanged and `value` is the same as the current value, no action is performed. This is to avoid marking the row as modified when not necessary. If `value` is null, the Set[PropertyName]Null() method of `TRow` will be used to null out the column. If such a method does not exist, the property will be set set to null.

Returns

Type	Description
TRow

Type Parameters

Name	Description
TRow	The typed System.Data.DataRow.
TValue	The property value type.

Set<TRow, TValue>(TRow, Expression<Func<TRow, TValue>>, Nullable<TValue>)

Sets the property value defined in property on the instance row if it doesn't already have the same value. This avoids marking the data row as modified if the value hasn't changed.

Declaration

public static TRow Set<TRow, TValue>(this TRow row, Expression<Func<TRow, TValue>> property, TValue? value)
    where TRow : DataRow where TValue : struct

Parameters

Type	Name	Description
TRow	row	The instance to set the property on.
System.Linq.Expressions.Expression<System.Func<TRow, TValue>>	property	An System.Linq.Expressions.Expression defining the property to set, e.g. 'x => x.MyProp' to set the property 'MyProp' from `row`.
System.Nullable<TValue>	value	The property value to set. If the System.Data.DataRow.RowState of `row` is System.Data.DataRowState.Unchanged and `value` is the same as the current value, no action is performed. This is to avoid marking the row as modified when not necessary. If `value` is null and the underlying data column is nullable, the column will be set to null (by calling the Set[PropertyName]Null() method). If `value` is null, the Set[PropertyName]Null() method of `TRow` will be used to null out the column. If such a method does not exist, the property will be set to the default of `TValue`.

Returns

Type	Description
TRow

Type Parameters

Name	Description
TRow	The typed System.Data.DataRow.
TValue	The property value type.

TryGet<TRow, TValue>(TRow, Expression<Func<TRow, TValue>>, out Boolean)

Gets the property value defined in property from the instance row.

Declaration

public static TValue TryGet<TRow, TValue>(this TRow row, Expression<Func<TRow, TValue>> property, out bool isNull)
    where TRow : DataRow

Parameters

Type	Name	Description
TRow	row	The instance to read the property from.
System.Linq.Expressions.Expression<System.Func<TRow, TValue>>	property	An System.Linq.Expressions.Expression defining the property to read, e.g. `x => x.MyProp` to read the property 'MyProp' from `row`.
System.Boolean	isNull	Output parameter which will be set to `true` if the Is[PropertyName]Null() method of `TRow` exists and returns `true`.

Returns

Type	Description
TValue	The property value, with fallback to the default of `TValue` if `isNull` has been set to `true`.

Type Parameters

Name	Description
TRow	The typed System.Data.DataRow.
TValue	The property value type.