wpf datagrid multiple row deletion

Ashok

9y2k

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

11 Replies

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Shweta Lodha9y ago
One readymade solution is also available here:
https://www.codeproject.com/questions/484312/howplustoplusselectplusallpluscheckboxplusofplusap

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Shweta Lodha9y ago

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 Lodha9y ago
We didn't hear anything from you. Is your query resolved?
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Ashok9y ago
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.
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Shweta Lodha9y ago
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.
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Ashok9y ago
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

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Amit Gupta9y ago
Hey Sai, check my earlier posted link.
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Ashok9y ago
Hi ,
i have a header checkbox in datagrid wpf how to get selected child rows when i click header checkbox.Thanks
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Ashok9y ago
Hi Swetha ,
Thanks for reply how to call this event ''dgEmp_RowEditEnding'' in intializecomponent method.
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Shweta Lodha9y ago
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);
}
}
}
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Amit Gupta9y ago
Hey
Check the below link
http://www.c-sharpcorner.com/forums/wpf-grdiview-select-all-notworking
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