wpf datagrid multiple row deletion

Question

Hi i am using a datagrid control using 3 columns first column with checkbox header as well as rows if i select header checkbox i need all the rows to be selected and if i unselect all the rows to be unselected and also i have a delete button outside of the datagrid. if i check header checkbox and perform delete operation i need all the rows to be delete and if i select individual record should be delete.how to acheive this .Thanks

Amit Gupta · Answer

Hey Sai check my earlier posted link.

Amit Gupta · Answer

Hey Check the below link http://www.c-sharpcorner.com/forums/wpf-grdiview-select-all-notworking

Shweta Lodha · Answer

One readymade solution is also available here: https://www.codeproject.com/questions/484312/howplustoplusselectplusallpluscheckboxplusofplusap

Shweta Lodha · Answer

sai As you mentioned that you have a checkbox at header level. So in that case you can take a property SelectAll in your viewModel and update your item source collections like: public bool SelectAll { get { return this . _selectAll ;} set { this . _selectAll = value ; this . MyItemsSourceCollection . ForEach ( x => x . MyRowCheckProperty = value ); this . OnPropertyChanged ( SelectAll ); } }

Shweta Lodha · Answer

We didn't hear anything from you. Is your query resolved?

sai · Answer

Hi  I am new to WPF once records binded to datagrid how to save those to list collection and how to remove all the values from collection.

Shweta Lodha · Answer

Hello Sai You need not to call the event explicitly. In xaml simply register this at DataGrid level as RowEditEnding=dgEmp_RowEditEnding. For complete example I already shared a link in my previous answer.

sai · Answer

Hi Amit  In xaml i have taken like this then how to perform deletion of checked rows and if i select header checkbox datagrid rows to be selected uncheck it shuld unckeck. Thank u for ur replies

sai · Answer

Hi  i have a header checkbox in datagrid wpf how to get selected child rows when i click header checkbox.Thanks

sai · Answer

Hi Swetha  Thanks for reply how to call this event '' dgEmp_RowEditEnding'' in intializecomponent method.

Shweta Lodha · Answer

Hi A complete sample is given over here: http://www.devcurry.com/2011/04/wpf-4-datagrid-delete-multiple-rows.html Basically you have to handle RowEditEnding event and in that event you can check whether your checkbox os selected or not. If it is selected then add that item to list (i.e. SelectedList). Now when you will click on Delete button delete all the items which you added earlier to the SelectedList. private void dgEmp_RowEditEnding( object sender DataGridRowEditEndingEventArgs e) { FrameworkElement element = dgEmp.Columns[4].GetCellContent(e.Row); if (element.GetType() == typeof ( CheckBox )) { if ((( CheckBox )element).IsChecked == true ) { FrameworkElement cellEmpNo = dgEmp.Columns[0].GetCellContent(e.Row); int EmpNo = Convert.ToInt32((( TextBlock )cellEmpNo).Text); lstSelectedEmpNo.Add(EmpNo); } } }