data-binding

问题 I am trying to implement two way binding in my project. but I am getting error when use conditional statement in layout. I have created model class model.java where getter setter defined. model.java public class Model { public String name; public string id; public String getWebsite() { return website; } public void setWebsite(String website) { this.name = website; } public int getId() { return name; } public void setId(String id) { this.id = id; } } Edittext in fragment_details.java <layout

问题 Closed. This question needs debugging details. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . Improve this question I'm trying to bind a List<dynamic> to a DataGridView DataSource property. While there are no errors when compiling there are no columns being displayed either. If I pre-create the column I get the rows to display, but there's no data in them. Simply put, how can I properly use a

问题 So i have a class (called DataClass) that handles some application data. The class implemented the INotifyPropertyChanged interface. Currently i have 2 static instances of this class (DataRx and DataTx) that i created in the ViewModelBase class and I want to raise the PropertyChanged events on each class separately. On the ViewModel the implementation is: DataRx.PropertyChanged += DataRx_PropertyChanged; DataTx.PropertyChanged += DataTx_PropertyChanged; The issue is that while I'm changing

问题 Within a ListView control, how to use the DisplayMemberPath property when I want to change the ItemContainerStyle ? I used a ListView control in the ControlTemplate of my control and the DisplayMemberPath property is set via Binding from outside of control. <ListView ItemsSource="{TemplateBinding ItemsSource}" DisplayMemberPath="{TemplateBinding DisplayMemberPath}"> <ListView.ItemsPanel> <ItemsPanelTemplate> <StackPanel Orientation="Horizontal" /> </ItemsPanelTemplate> </ListView.ItemsPanel>

问题 I'm looking at using databinding - and the simplest thing to do seems to be to use a BindingSource to wrap my data objects. However - while the CurrentItemChanged event tells me when a property has changed, it doesn't tell me which one - and that's a vital part of what I need. Is there any way to find out which property is changing? 回答1: Your data objects need to implement the INotifyPropertyChanged interface: public class MyObject : INotifyPropertyChanged { public event

问题 I'm looking at using databinding - and the simplest thing to do seems to be to use a BindingSource to wrap my data objects. However - while the CurrentItemChanged event tells me when a property has changed, it doesn't tell me which one - and that's a vital part of what I need. Is there any way to find out which property is changing? 回答1: Your data objects need to implement the INotifyPropertyChanged interface: public class MyObject : INotifyPropertyChanged { public event

问题 I'm using a FormView with an ObjectDataSource and binding using <%# Bind("WhateverProp") %> - and all of my nullable columns are coming back with default values of the type in them. It appears that the FormView object doesn't have a ConvertEmtpyStringToNull property like the other binding containers do. I've found articles suggesting that this was a bug in VS 2005 / .Net 2.0 - but don't see any saying what the resolution was. Does anyone have any suggestions as to how I can work around this

问题 I'm using a FormView with an ObjectDataSource and binding using <%# Bind("WhateverProp") %> - and all of my nullable columns are coming back with default values of the type in them. It appears that the FormView object doesn't have a ConvertEmtpyStringToNull property like the other binding containers do. I've found articles suggesting that this was a bug in VS 2005 / .Net 2.0 - but don't see any saying what the resolution was. Does anyone have any suggestions as to how I can work around this

问题 I have a dataset I created from a Oracle Query. I get a datatable from a function and add it to dataset. now I try to bind to treeview to the ds. My code Behind: private void init_TreeView() { //TreeViewItem parent = PM_TreeView.Items.Add("Requirements"); DataTable dt = DataBases.RunQuery(); dt.TableName = "REQ"; DataSet ds = new DataSet(); ds.Tables.Add(dt); //ds.Relations.Add("rsParentChild", ds.Tables["REQ"].Columns["RQ_REQ_ID"], ds.Tables["REQ"].Columns["RQ_FATHER_ID"]); var dataSet = ds;

问题 I have a dataset I created from a Oracle Query. I get a datatable from a function and add it to dataset. now I try to bind to treeview to the ds. My code Behind: private void init_TreeView() { //TreeViewItem parent = PM_TreeView.Items.Add("Requirements"); DataTable dt = DataBases.RunQuery(); dt.TableName = "REQ"; DataSet ds = new DataSet(); ds.Tables.Add(dt); //ds.Relations.Add("rsParentChild", ds.Tables["REQ"].Columns["RQ_REQ_ID"], ds.Tables["REQ"].Columns["RQ_FATHER_ID"]); var dataSet = ds;