How can I add data Items to a DataGrid programmatically in WPF which do not have bindings? The DataGrid has 4 columns.
3 Answers
It is not very clear, what You like to do. I guess, You have defined some place where You want to put the DataGrid. For illustration purposes, I created a new WPF project and use the code provided by chridram, who posted the first answer.
In the following MainWindow.xaml I name the Grid MainGrid to access it in the code behind:
<Window x:Class="WpfExperiments.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid Name="MainGrid"/>
</Window>
The DataItem class is not a WPF class, but a custom class created by Yourself:
public class DataItem
{
public string Column1 { get; set; }
public string Column2 { get; set; }
public string Column3 { get; set; }
public string Column4 { get; set; }
}
To let the DataGrid display data stored in DataItem objects programmatically, You may do the following:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
// Your programmatically created DataGrid is attached to MainGrid here
var dg = new DataGrid();
this.MainGrid.Children.Add(dg);
// create four columns here with same names as the DataItem's properties
for (int i = 1; i <= 4; ++i)
{
var column = new DataGridTextColumn();
column.Header = "Column" + i;
column.Binding = new Binding("Column" + i);
dg.Columns.Add(column);
}
// create and add two lines of fake data to be displayed, here
dg.Items.Add(new DataItem { Column1 = "a.1", Column2 = "a.2", Column3 = "a.3", Column4 = "a.4" });
dg.Items.Add(new DataItem { Column1 = "b.1", Column2 = "b.2", Column3 = "b.3", Column4 = "b.4" });
}
}
I hope this helps.
Greetings Jörg
2 Comments
katu
This is working well.But i want to do this for a
DataGrid that is already created in XAML.I tried this on it,i can see columns getting added but nothing displays in the columns.I think the problem is with DataBinding. i tried <DataGridTextColumn Header="Code" Width="80" x:Name="colCode" Binding="{Binding}"> and <DataGridTextColumn Header="Code" Width="80" x:Name="colCode" Binding="{Binding ElementName=colCode}">katu
Its alrite.I got it done.Problem was different column names and
DataItem names.this a function which i use for retrive data from database
string query = "Select * from VWpatientinfo";
DataTable dataTableObject = new DataTable("Table Name");
obj.DataRetrive(query,dataTableObject);
DataGridName.ItemsSource = dataTableObject.DefaultView;
Comments
.xaml:
<DataGrid x:Name="dataGrid" Margin="10">
<DataGrid.Columns>
<DataGridCheckBoxColumn Binding="{Binding Path=Column1}"/>
<DataGridTextColumn Binding="{Binding Path=Column2}"/>
</DataGrid.Columns>
</DataGrid>
.cs:
public class DataItem
{
public bool Column1 { get; set; }
public string Column2 { get; set; }
}
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
DataItem item = new DataItem();
item.Column1 = true;
item.Column2 = "test";
dataGrid.Items.Add(item);
}
}
DataGrid.Items.Add(new DataItem());I tried this but no idea to createDataItem()columnsthat are not from adataset