bindinglist

问题 I have BindingList object which is attched with DataGridView. BindingList<FilesToProcessDataModels> Listfiles = new BindingList<FilesToProcessDataModels>(); dataGridFiles.DataSource = Listfiles; I want to filter items list by given condition in Where. like following: dataGridSheets.DataSource = Listfiles.Where(i => i.Status == FileStatus.NotProcessed).ToList(); Above code is working fine but I want to assign filter resut to the same type object [Listfiles] instead datagrid, When I am doing

问题 I have asked this question on MSDN forums as well ... http://social.msdn.microsoft.com/Forums/en/wpf/thread/4493988a-9bd8-48fe-aff0-348502136a80 I need to know that why Microsoft suggests that BindingList is not properly supported in WPF... What is it that doesnt work with BindingList in WPF? I find it pretty useful as it is. So far I personally have not found BindingList any slower or a having more load on memory. Plus WPF ItemsControls , ItemsTemplates , Styles , Hierarchies work great with

问题 I have a DataGridView with the DataSource set to List<myClass> However, the new row indicator does not display when I set AllowUserToAddRows to true , When I set the DataSource to BindingList<myClass> , that seems to solve the problem. Q : Should replace my List<> with BindingList<> or there is better solution? 回答1: Does myClass have a public parameterless constructor? If not, you could derive from BindingList<T> and override AddNewCore to call your custom constructor. (edit) Alternatively -

问题 I want to display a list of people in a DataGridView in a Windows Forms app. I want my service layer to return a list of Person objects (e.g., IList<Person> ). I want changes in the list to be reflected in the DataGridView and vice versa. My understanding is that using the BindingSource facilitates working with DataGridView . My question is for the two-way databinding to work, do I need: //pseudo code BindingSource.DataSource = IBindingList<Person> or can I do: BindingSource.DataSource =

问题 In C# WinForms I have two DataGrids displaying tabular data. First display all rows, second one is supposed to display filtered set of these rows. I need to build filtered view on my BindingList view instance. This view needs to be updated, once underlying list is changed. I've tried to build new BindingList instance with LINQ and Where but the filtered is not updated when underlying myList is changed. var filtered = new BindingList<Clip>(myList.Where<Clip> ( c => c.participant.Contains(id) )

问题 I am in the process of switching over from DataTable to BindingList. I bind the DataTable to the DataGrid object. Here my dilemma: while I certainly see the advantages of switching over, my circumstances will make it a bit complex and I am wondering whether it is worth it to switch over. My scenario: I have a DataGrid which displays chemical samples. There are 5 kinds of sample type, where the columns in the grid will differ for each type (and sometimes within the same type based on other

问题 I use winforms and c#. How can I filter Binding source or binding list. with a textbox text ? I meam while I am typing in a textbox my grid is filtering with a %Like method not (=,equal)method. thanks. 回答1: I use delegate for this problem. Some code like bellow _List = _List.FindAll( delegate(MyEntity entity) { return entity.Title.Contains(TXT_Title.Text); } ); Gview.DataSource = _List ; 回答2: You may want to use CollectionViewSource class to enable filtering. See here 来源： https:/

问题 I have a DataGridView and I'm binding it to a BindingList<KeyValuePair<string, float>> . Here's the relevant part of the code: dgv.AutoGenerateColumns = false; DataGridViewTextBoxColumn firstColumn = new DataGridViewTextBoxColumn(); firstColumn.DataPropertyName = "Key"; firstColumn.HeaderText = "First Column"; DataGridViewTextBoxColumn secondColumn = new DataGridViewTextBoxColumn(); secondColumn.DataPropertyName = "Value"; secondColumn.HeaderText = "Second Column"; secondColumn.ReadOnly =

问题 I have a BindingList with my class where I would like to populate a ComboBox using a property of it so when my list changes the ComboBox would change as well. public class UserAccess { public override string ToString() { return Access; } public int AccessId { get; set; } public string Access { get; set; } public List<string> Command = new List<string>(); public bool HasCommand(string cmd) { return this.Command.Any(x => x == cmd); } } public BindingList<UserAccess> accessList = new BindingList

问题 I work for an Architecture firm and I am creating a plug-in for a 3D modeling program to assist design. I have a Building class, and a Floor class. The building contains a reference to a FloorList collection of floors. I'm trying to figure out what to base the FloorList collection off of so that I can minimize the amount of work I need to do to create an interface to edit the collection. The Floor collection represents a series of building floors that are stacked on top of one another. Each