How can we know if a row is dirty in a telerik gridview?
In datagridview we had IsCurrentRowDirty property.
Is there any such property in Telerik?
One way to do this with RadGridView is to use the CellValueChanged event:
void radGridView1_CellValueChanged(object sender, GridViewCellEventArgs e)
{
e.Row.Tag = "ThisRowIsDirty";
}
Related
Does anyone know how to dynamically set the ElementName for textblock.text binding?
I have two Datagrids that have the same information but the second DataGrid is just a filter of the same datasource, but what I want is to bind text of a textblock to the selected item depending if the item was clicked in the main datagrid or the secondary datagrid.
I have the below code to bind the textblock to one datagrid but I would also like the same to happen if the user clicked an item in the secondDataGrid.
Is this possible?
<TextBlock Margin="29,0" Text="{Binding SelectedItem.Name, ElementName=MainDataGrid}"
It is possible, though I don't think this is the proper solution.
You can handle one of the DataGrids' events in the code-behind, where in the handler you can write the following code:
BindingOperations.SetBinding(textBlock, TextBlock.TextProperty,
new Binding("SelectedItem.Name")
{
ElementName = "DataGrid1"
});
Basically you reset the Binding on the TextBlock's Text property with this code, where:
textBlock is the name of your TextBlock;
with TextBlock.TextProperty you define that you want to work with the Text property on the TextBlock;
The third paramter is the new Binding itself. The constructor takes the Path of the Binding and then in the "body" I set the ElementName.
If DataGrid1 fires the event you set the ElementName to that DataGrid's name, if DataGrid2 fires the event then you set the ElementName to the second DataGrid's name.
SelectionChanged can be a good event to handle on both DataGrid, but if you want the TextBlock to update when you selected and element in the first then select another one in the second and then click back to the first element to update then you need to handle the GotFocus event as well.
Play a little bit with it and you will see what I mean.
My working example:
private void SetBindingOnTextBlock(string elementName)
{
BindingOperations.SetBinding(textBlock, TextBlock.TextProperty, new Binding("SelectedItem.Name")
{
ElementName = elementName
});
}
private void DataGrid_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
SetBindingOnTextBlock("DataGrid1");
}
private void DataGrid_SelectionChanged_1(object sender, SelectionChangedEventArgs e)
{
SetBindingOnTextBlock("DataGrid2");
}
private void DataGrid1_GotFocus(object sender, RoutedEventArgs e)
{
SetBindingOnTextBlock("DataGrid1");
}
private void DataGrid2_GotFocus(object sender, RoutedEventArgs e)
{
SetBindingOnTextBlock("DataGrid2");
}
UPDATE 1:
Set
IsSynchronizedWithCurrentItem="True"
on the DataGrids and it may solve your problem if ItemsSources are the same. (Not sure if this is what #dkozl meant) Originally I assumed that they are different.
I'm trying to drag an item from a listbox to a textbox in WPF.
I can't get any code that will let me do this.
Thanks
Use selection change event of listbox
private void listBox2_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
ListBoxItem i = (ListBoxItem)listBox2.Items[listBox2.SelectedIndex];
s = i.Content.ToString();
DragDrop.DoDragDrop(listBox2, i.Content.ToString(), DragDropEffects.All);
}
I have a hyperlink button colum in silverlight telerik radgridview, as a cell template.
I am using MVVM.
When i click on the hyperlink button, how can i get its row's values(atleast in the code behind)..?
Thanks in advance..
You need to use the ParentOfType extension method to get hold of the row containing the button.
Once you have the row you can cast the item type to your viewmodel and access the properties of it.
Make sure you have a using statement for the extension method:
using Telerik.Windows.Controls;
private void Button_Click(object sender, RoutedEventArgs e)
{
var parent = (sender as Button).ParentOfType<GridViewRow>();
var rowVM = parent.Item as YourVmClass;
}
If you are using MVVM you can also use the EventToCommandBehavior.
This allows you to execute all events as commands. You can then handle the command in your viewmodel.
I am using a checkbox on expander. I want, when I check that checkbox ,it will select all rows of list view those are coming under that expander.
set the listview's selectionmode to Multiple' or 'Extended and
on the CheckBox_Checked event you can write the code to select the rows of listview
private void CheckBox_Checked(object sender, RoutedEventArgs e)
{
listview1.SelectAll();
}
Try this inside your checkbox_click events handler:
listView1.BeginUpdate();
foreach (ListViewItem i in listView1.Items)
{
i.Selected = true;
}
listView1.EndUpdate();
Which gives you a bit more flexibility.
I have bound a datatable to a datagrid in WPF. Now on clicking a row in the grid I need to have a window pop up. But for that, I need to first change a column in the datagrid to be a hyperlink. Any ideas on how to do that?
<DataGrid Name="dgStep3Details" Grid.Column="1" Margin="8,39,7,8" IsReadOnly="True" ItemsSource="{Binding Mode=OneWay, ElementName=step3Window,Path=dsDetails}" />
If I can't change an autogenerated column to hyperlink, is there a way to add a button to each row instead?
Thanks
Nikhil
So, it was really hard to create hyperlink columns to autogenerated datagrid. What I eventually did was this - create buttons to the grid on the fly and then attach a routed event for the same based on the autogenerate event of the datagrid where I shall put my code. I didn't want my code to be hardcoded to the columns and now I'm flexible by changing the datatable on the fly. Here is the code:
private void dgStep3Details_AutoGeneratedColumns(object sender, EventArgs e)
{
DataGrid grid = sender as DataGrid;
if (grid == null)
return;
DataGridTemplateColumn col = new DataGridTemplateColumn();
col.Header = "More Details";
FrameworkElementFactory myButton = new FrameworkElementFactory(typeof(Button), "btnMoreDetails");
myButton.SetValue(Button.ContentProperty, "Details");
myButton.AddHandler(Button.ClickEvent, new RoutedEventHandler(btnMoreDetails_Click));
DataTemplate cellTempl = new DataTemplate();
//myButton.SetValue(Button.CommandParameterProperty, ((System.Data.DataRowView)((dgStep3Details.Items).CurrentItem)).Row.ItemArray[0]);
cellTempl.VisualTree = myButton;
col.CellTemplate = cellTempl;
dgStep3Details.Columns.Add(col);
}
public void btnMoreDetails_Click(object sender, RoutedEventArgs e)
{
//Button scrButton = e.Source as Button;
string currentDetailsKey = ((System.Data.DataRowView)(dgStep3Details.Items[dgStep3Details.SelectedIndex])).Row.ItemArray[0].ToString();
// Pass the details key to the new window
}
I don't think you'll be able to get these advanced UI features out of autogenerated columns. I think you'll either have to decide to program these columns in C# or VB.NET when you retrieve your data and tailor them the way you like, or you'll have to abandon the UI ideas you've mentioned. Autogenerated columns just cannot do that.
However, you could change your approach. Try checking into events like MouseLeftButtonDown, etc. and see if you can simulate the behavior you want by other means.