本文整理汇总了C#中QueryExpression.Where方法的典型用法代码示例。如果您正苦于以下问题：C# QueryExpression.Where方法的具体用法？C# QueryExpression.Where怎么用？C# QueryExpression.Where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.Where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: GetExistingEntityQuery
/// <summary>
/// Gets a queryExpression that represents a Query to an existing entity
/// </summary>
/// <param name="rootQuery"> The root query expression of the set</param>
/// <param name="existingEntity">The structural value representing an existing entity</param>
/// <returns>A QueryExpression representing a query to an existing entity</returns>
/// <remarks>
/// 1. We don't use the .Key syntax because :
/// Key forces the Query option to take on the Key FOrmat
/// /Customers('ALFKI')
/// We change the query to be Customers?$filter=Id eq 'ALFKI' and true so that we don't use the key syntax as it doesn't work with Live servers.
/// 2. We append the 'and true' part because :
/// If you use the client library and completely cover the key, the client's linq translator will use the key syntax.
/// To avoid this, we completely cover the key and also add the 'true" so that the client doesn't produce a key expression string.
/// </remarks>
protected internal static QueryExpression GetExistingEntityQuery(QueryExpression rootQuery, QueryStructuralValue existingEntity)
{
// We cannot create new LinqParameterExpressions as we track the parameters by name, we need to reuse the parameter from the root query
Func<LinqParameterExpression, QueryExpression> generateFilterExpression = (entityParameter) =>
{
QueryExpression keyFilterExpression = GetExistingEntityKeyComparisonExpression(entityParameter, existingEntity);
return keyFilterExpression;
};
var query = rootQuery.Where(eParam => generateFilterExpression(eParam).And(CommonQueryBuilder.Constant(true, existingEntity.Type.EvaluationStrategy.BooleanType)));
return query;
}