本文整理汇总了C#中QueryExpression.Property方法的典型用法代码示例。如果您正苦于以下问题：C# QueryExpression.Property方法的具体用法？C# QueryExpression.Property怎么用？C# QueryExpression.Property使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QueryExpression的用法示例。
在下文中一共展示了QueryExpression.Property方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetExistingEntityKeyComparisonExpression
/// <summary>
/// Gets a queryExpression that represents a Query to an existing entity
/// </summary>
/// <param name="entityParameter">The LinqParameterExpression which represents the root parameter</param>
/// <param name="existingEntity">The structural value representing an existing entity</param>
/// <returns>A QueryExpression representing a query to an existing entity</returns>
protected static QueryExpression GetExistingEntityKeyComparisonExpression(QueryExpression entityParameter, QueryStructuralValue existingEntity)
{
QueryExpression keyFilterExpression = null;
QueryEntityType entityType = existingEntity.Type as QueryEntityType;
foreach (var keyProperty in entityType.EntityType.AllKeyProperties)
{
var queryProperty = entityType.Properties.SingleOrDefault(p => p.Name == keyProperty.Name);
ExceptionUtilities.CheckObjectNotNull(queryProperty, "Could not find property with name '{0}' on type '{1}'", keyProperty.Name, entityType);
var value = existingEntity.GetScalarValue(keyProperty.Name);
QueryExpression keyComparision = entityParameter.Property(keyProperty.Name).EqualTo(CommonQueryBuilder.Constant(value));
if (keyFilterExpression == null)
{
keyFilterExpression = keyComparision;
}
else
{
keyFilterExpression = CommonQueryBuilder.And(keyFilterExpression, keyComparision);
}
}
return keyFilterExpression;
}