wpf datagrid itemssource

, ViewModel is also a special mode, and its view can be bound with data. The latest role, ViewModel contains a data transmitter, which transfers data in the Model to the View. ViewModel also contains some commands, so that the View can interact with the Model. public class UserViewModel : INotifyPropertyChanged { public event PropertyChangedEventHandler PropertyChanged; public void RaisePropertyChanged(string propertyName) { if (propertyName != null)

NPOI exports the display data of the WPF DataGrid Control, npoiwpf Recently, when I was working on a project, I needed to export the data displayed in the DataGrid. I encountered a lot of pitfalls in the middle. I would like to record them here for future reference. I also hope to provide some help to users. The data displayed in the export

, updatesourcetrigger=propertychanged}">TextBox> DataTemplate> datagridtemplatecolumn.celltemplate> Datagridtemplatecolumn> DatagridtemplatecolumnHeader= "Course"Width= "+"> Datagridtemplatecolumn. CellTemplate> DataTemplate> ComboBoxMargin= "5"ItemsSource= "{Binding Coursesource}"Text= "{Binding Course, Mode=two

with a proxy class for the VM through sourceproxy classFreezable can inherit DataContext even if they are not in the visual tree or the logical tree Public classbindingproxy:freezable {#regionOverrides of Freezableprotected OverrideFreezable Createinstancecore () {return NewBindingproxy (); } #endregion Public ObjectData {Get{return(Object) GetValue (Dataproperty); } Set{SetValue (dataproperty, value);} } Public Static ReadOnlyDependencyProperty Dataproperty =D

Introduction There is a more common requirement in a DataGrid-related project. That is, you can set the style of the row based on the data, such as the background color of the row or the color of the font. There are several ways we can use them, one for each.Preparatory work before introducing the method, define the data class, is a relatively simple score table, with name, score, etc., the code is as follows: Public class score { public

In the Delphi era, I do not like to edit the data directly on the Stringgrid, and if the entire ComboBox in this Drop-down selection box, it is simply troublesome. After using WPF, I think it should be edited directly on the Stringgrid, otherwise, you will have to drag out a lot of TextBox and ComboBox out, then the DataGrid is left only the selected role. The text is very say, ComboBox on the trouble, ho

The loading of the DataGrid's data source requires a lot of IO operations, which cannot be displayed to the UI until the data is fully read. Due to the lack of familiarity with WPF data binding, there is not much time for observecollection and other content to be studied, only a few trickery methods can be used.Set the DataGrid's data source, as long as you modify the ItemsSource property, as follows:List d

SqlDataAdapter SDA = new SqlDataAdapter ();Sda. SelectCommand = cmd;DataSet ds = new DataSet ();Sda. Fill (DS);dataGrid1.ItemsSource = ds. Tables[0]; (This is the notation in WinForm)----------------------------------------------------------------------------------------------SqlDataAdapter SDA = new SqlDataAdapter ();Sda. SelectCommand = cmd;DataSet ds = new DataSet ();Sda. Fill (DS);dataGrid1.ItemsSource

In WPF, click the DataGrid, how do I get the row currently clicked?For example, in the MouseDoubleClick event, in fact the selected row is a DataRowView, you can use the following methods to get the data of the selected row, you need to refer to system. IO and System.Data;var a =this.exdatagrid.selectitem;var b= a as DataRowView;or Var b= (DataRowView) Exdatagrid.selectitemb["Filedname"]. ToString (); Where

(handler !=null) handler(this,newPropertyChangedEventArgs(propertyName));35.}36.37.}The onpropertychanged in the back does not need to be cared for in order to achieve dynamic data changes, generally not requiredLook at the template for the ComboBox in the DataGrid that's the point.View Sourceprint?01."False"Height="236"HorizontalAlignment="Left"Margin="12,0,0,0"Name="dataGrid1"VerticalAlignment="Top"Width="471">02.03."Header1"Binding="{Binding Name}"

XamlDataGridx:name= "MYGRD"ItemsSource="{Binding Searchitems}"SelectedItem="{Binding SelectedItem}"SelectionMode= "single"Selectionunit= "Fullrow"> i:interaction. Triggers> I:eventtriggerEventName= "MouseDoubleClick"> Cmd:eventtocommandCommand="{Binding Mousedoubleclickcommand}"CommandParameter="{Binding elementname=mygrd, path=selecteditem}" /> I:eventtrigger> i:interaction. Triggers> ...

To construct the data:usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;usingSystem.Windows;usingSystem.Windows.Controls;usingSystem.Windows.Data;usingSystem.Windows.Documents;usingSystem.Windows.Input;usingSystem.Windows.Media;usingSystem.Windows.Media.Imaging;usingSystem.Windows.Navigation;usingSystem.Windows.Shapes;namespacewpfapplication2{/// ///the interactive logic of MainWindow.xaml/// Public Partial classMainwindow:window {

DataGrid is the data display control in WPF, which is equivalent to the windview in winform. However, there are some differences in usage between the two. In this document, if you use the differences between the two to better describe the use of the DataGrid, I will use this method. Now let's take a look at how to specify a data source for the

1 stringConstr = system.configuration.configurationmanager.connectionstrings["Str"]. ConnectionString;2SqlConnection con =NewSqlConnection (constr);3SqlCommand Command =NewSqlCommand ();4Command.commandtext ="SELECT * FROM Test";5Command. Connection =con;6Command.commandtype =System.Data.CommandType.Text;7 Try8 {9 con. Open ();TenSqlDataAdapter SDA =NewSqlDataAdapter (command); OneDataSet ds =NewDataSet (); ASda. Fill (DS,"Test"); -DataTable dt = ds. tables["Test"]; -

Download source-117kb As shown in the preceding two figures, the left side is the winform datagridview and the right side is the WPF DataGrid (encapsulated as the custom control dragdatagrid and loaded in winform through the WPF elementhost ). You can drag and drop the rows to sort them. In addition, you can drag data from the winform datagridview to the

When you use WPF for application development, you often generate line numbers for the DataGrid, and here are the main ways to generate line numbers. There are usually three ways to introduce two of them, and the other is simply to mention them.1. Operate directly in the Loadingrow event.This approach is done in the code behind file. That is, the corresponding *.xaml.cs file.The code is as follows:This.dataG

It is mentioned that DataGrid is frequently used in both web pages and application development. With it, we can flexibly display various data between rows and columns. This article describes the functions of DataGrid in WPF 4 in detail.Custom Columns By default, after the ItemSource attribute is set for the DataGrid Co

How to get the contents of a cell from a Datagrid conversion of bound data using a value converter ivalueconverter How to get the contents of a cell from a Datagrid The DataGrid belongs to a itemscontrol, so it has the Items property and encapsulates its items with Itemcontainer. However, the DataGrid in

Reprint: http://blog.csdn.net/jhqin/article/details/7645357 /*---------------------------------------------------------- File name: DataGridPlus.cs Qin Jianhui Msn:[email protected] qq:36748897 Blog: http://blog.csdn.net/jhqin Development environment: Visual Studio V2010 . NET Framework 4 Client profile Version history: V1.0 June 07, 2012 WPF DataGrid Control Extension

Expand the WPF DataGrid and press the arrow key to move the focus. The default moving behavior of the WPF DataGrid is as follows: (1) When the current cell is not in the editing status, you can use the direction key to move the focus. (2) When the current cell is in the editing status, you cannot use the direction keys