Hi, I'm using a RadPdfViewer to show a Pdf.

If the pdf is signed the signatures panel is showed, but the signature is always showed as not valid, even if it is valid.
The error is that the "The signer's identity isunknown".

I tried also to call the SignatureField.Signature.Validate() method and it throws an exception like this:

No signature validation handler was found for the subfilter: ETSI.CAdES.detached

Any suggestion?

Thanks.

Hi,

how can I remove the arrow button in a RadTabbedForm header (WinForms)?    Please see the attached photo

Thanks,

Roy

Hello,

I've benn experiencing extreme slowness in my ERP application. Not just when logging in but in any form window.

This only happens when the application is running on windows 11 from an application shortcut located on a remote server.  (The problem occurs on both desktop and notebook)

However, when running the same scenario on Windows 10, this slowdown does not occur.

Has anyone faced this problem with Windows 11 ?

Attached system configuration.

Thank You

obs: Running locally on both windows 11 and 10 there is no slowdown.

I have a grid with header and child rows. Some columns are the same in the child rows but not everything.

How can I align the columns properly that the header and the child are below each other?

vb: colum1 column2 column3 column4

    column1                 column3

Like in the screenshot. I have to align the yellow, blue and red columns. But the other columns don't have to be visible in the child. 

Hi, I have a RadGridView with the first 2 columns pinned, and the other columns allow reordering.

The first 2 columns are pinned, but I can move an unpinned column between the pinned columns or to the extreme left, so now I have three pinned columns.

Is it possible to fix this?

Thanks

We had a project using two RadGridViews in Winforms, one of the features was dragging some info from one of the rows of one grid to other row of the grid.

With olders versions of Telerik controls, when dragging no insert lines appear, but we have updated to current version and now, when dragging one row from one grid to the other one inserting lines appear over or below the row

This is great for most cases but not for this one,

Is there any way to prevent this lines?

HI

Q3 2024 462

When The table contains a large number of rows. (I checked 550 rows and 30 columns (Example) ).
When I scroll with the scroll with the arrow on the screen reduced to the width, the scrolling is reasonable and smooth.
But if I'm on a widescreen the scrolling is stuck and not smooth.
For this purpose, I reduced the screen width and clicked on the scroll down arrow. And in 550 lines it took about 18 seconds to get from top to bottom. On a wide screen it took 50 seconds to scroll from top to bottom
I did the test on a static table that only loaded simple information and presented it without events or other manipulations on the table.
In the real world it is much worse because there are also online updates on the table and formatting. And if there are many rows in the table many times the screen freezes on scrolling.

Please your urgent help.

Example:

using System;
using System.Data;
using System.Windows.Forms;
using Telerik.WinControls.UI;

namespace WindowsFormsApp2
{
    public partial class Form1 : RadForm
    {

        int colCount = 30;

        public Form1()
        {
            InitializeComponent();
            this.Width   = 650;
            this.Height = 1050;
            this.StartPosition = FormStartPosition.CenterScreen;
            radGridView1.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.None;
      }

        private void radButton1_Click(object sender, EventArgs e)
        {
            AddColumnsAndRows();
        }

        private void AddColumnsAndRows()
        {
            DataTable dt = new DataTable();
            for (int i = 0; i < colCount; i++)
            {
                dt.Columns.Add("ColName_" + (i + 1), typeof(string));
            }

            for (int row = 0; row < 550; row++)
            {
                DataRow dr = dt.NewRow();
                for (int col = 0; col < colCount; col++)
                {
                    dr[col] = "DataTest_C" + (col + 1) + "_R" +  (row + 1);
                }

                dt.Rows.Add(dr);
            }

            radGridView1.DataSource = dt;
            radGridView1.BestFitColumns();
        }
    }
}

Hi,

In my application I wantg to give the user the baility to select from multiple items using the checked drop down list box control, in adidtion I want to be able to do the following:

1. prevent the user from typing anything in to the RadCheckedDropDownListEditableAreaElement. i.e. the user can select items via the drop down check list.

2. override the text displayed in RadCheckedDropDownListEditableAreaElement, so that

• if no items are displayed there is no text
• if one item is displayed then monly that item is displayed - with no 'X' to remove it
• if more than one item is selected, then display the single word "Multiple"

How do I go about achieveing this behaviour ?

many thanks

Toby