Completed
Last Updated: 09 Jul 2021 11:20 by ADMIN
Release R3 2021
Created by: Stoyan
Comments: 3
Category: ListView
Type: Bug Report
1

System.NullReferenceException: 'Object reference not set to an instance of an object.' when removing items from the list:

 public Form1()
 {
     InitializeComponent();
     for (var i = 0; i < 30; i++)
     {
         var item = new ListViewDataItem();
         radListView2.Items.Insert(0, item);
         item[0] = i;
         item[1] = i;
         item[2] = i;
         item[3] = i;
     }
 }
private void radButton1_Click(object sender, EventArgs e)
{
    try
    {
        radListView2.BeginUpdate();

        foreach (var lvi in radListView2.Items.ToArray())
        {
            radListView2.Items.Remove(lvi);
           
        }
    }
    finally
    {
        radListView2.EndUpdate();
    }
}

Completed
Last Updated: 23 Dec 2020 16:06 by ADMIN
Release R1 2021
Created by: ASM
Comments: 1
Category: ListView
Type: Bug Report
0

Just to report a little typo in RadListViewElement:

 

Protected Overrides Sub OnCurrecntItemChanged(args As ListViewItemEventArgs)

 

Thanks.

Completed
Last Updated: 15 Jun 2020 09:10 by ADMIN
Release R2 2020 SP1

This problem is even reproducible in our Demo application >> Virtual Grid >> Web service example. You will notice that when you scroll to the bottom, the waiting indicator is not being animated when the DPI scaling is higher than 100%.

If you apply the same gif file in a PictureBox it gets animated when using 150% DPI scaling.

Completed
Last Updated: 19 Mar 2020 14:39 by ADMIN
Release R2 2020 (LIB 2020.1.323)
Completed
Last Updated: 19 Mar 2020 14:38 by ADMIN
Release R2 2020 (LIB 2020.1.323)
The issue can be reproduced if the control is not grouped when deleting the items in the data source.
Completed
Last Updated: 11 Nov 2019 14:17 by ADMIN
Release R1 2020 (LIB 2019.3.1111)

Please refer to the attached sample project and follow the steps illustrated in the gif file.

Note: if the vertical  scrollbar is visible, the editor is activated as expected. 

Workaround:

Me.RadListView1.ItemSize = New Size(200, 30)