XPQuery<T>.TransformExpression(Expression<Func<T, Boolean>>) Method
Converts a lambda expression into an instance of the CriteriaOperator class descendant.
Namespace: DevExpress.Xpo
Assembly: DevExpress.Xpo.v24.1.dll
NuGet Packages: DevExpress.Win.PivotGrid, DevExpress.Win.TreeMap, DevExpress.Xpo
NuGet Package: DevExpress.Xpo
Declaration
Parameters
Name | Type | Description |
---|---|---|
expression | Expression<Func<T, Boolean>> | A lambda expression. |
Returns
Type | Description |
---|---|
CriteriaOperator | An instance of the CriteriaOperator class descendant that represents the lambda expression. |
Example
In the following code snippet the customers collection will contain only the customers named “Bob”:
using DevExpress.Xpo;
using DevExpress.Data.Filtering;
//...
Session MainSession = new Session();
XPQuery<Customer> customersQuery = new XPQuery<Customer>(MainSession);
CriteriaOperator criteria = customersQuery.TransformExpression(c => c.Name == "Bob");
XPCollection<Customer> customers = new XPCollection<Customer>(MainSession);
customers.Criteria = criteria;
See Also