Questions on UI for WinForms Forum

9 answers

1.3K+ views

RadDropDownList ReadOnly

Hi,
Is there ways to make RadDropDownList text as "ReadOnly" in Run Time mode?

DropDownList

answered on 16 Jul 2013

1 answer

102 views

Reorder nodes in bound mode

Hi Telerik support,
When i try to reorder elements in a treeview, everithink works fine, but the droped item allways goes to the bottom of the node, not to the correct place between other two elements .
I saw that this is the same behavior with your demo app in TreeView-->Populate With Data --> Self Reference section , but need to know is it some way to acheeve correct reorder functionality when bind treeview with some external data.

EDIT: Additionally, SortDescriptors also doesn't work in this scenario.

Regards,
Martin

Treeview

answered on 16 Jul 2013

4 answers

405 views

Fixed ColumnChooser

Hi!

I'm using RadGridView and I need to let the grid ColumnChooser fixed as part of the layout, as it was a component I can attach to another. As I could see and searched, the ColumnChooser is a floating window that is at the top.
Searching, I found out that I probably would get to what I need adding handles to the Shown event of the ColumnChooser (since every time it's shown a new instance is created), and call a move function that I have to implement to set the position of the ColumnChooser. As well, I would have to call this function every time the form is moved or re-sized.
Is there any other way to do something like a fixed ColumnChooser instead doing it?

Thanks in Advance!

GridView

answered on 16 Jul 2013

5 answers

184 views

2 DateTimePicker and NullDate Problem

I use 2 DateTimePicker, one for FromDate and one for ToDate.

I like the idea of displaying null text ie: 'From Begining' and 'To End' but my problem is that for some reason whatever I set NullDate for the ToDate, it returns MinDate value.

How can I make it choose the MaxDate when using SetToNullValue. I tried many variations but alas.

PS.: I have one DatePicker on a UserControl and have 2 copies of the user control on a form and I added properties to the usercontrol to set date.value, MinDate, MaxDate, NullText, NullDate, SetToNullValue..

Calendar, DateTimePicker, TimePicker and Clock

answered on 16 Jul 2013

1 answer

96 views

Report viewer not releasing PDF

I have a Telerik Report in a WinForm that randomly fails to release the PDF it has created for viewing. The first time the report will view fine. Changing variables and clicking submit more often results in a 'The process cannot access the file 'C:\Temp...\..PDF' because it is being used by another process. Exiting the report form itself has no effect and the files remain locked until the main program is shut down.

PdfViewer and PdfViewerNavigator

answered on 16 Jul 2013

1 answer

327 views

problem with listview orientation

this is the demo snipped of code that you provide in winforms Q2 2013 demo for listview -> custom settings. The orientation works fine in the demo app but I have the same snipped of code as the demo app. I've debugged this multiple times trying to figure out why the orientation is always vertical but there is no clear reason for it at the moment.

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using Telerik.QuickStart.WinControls;

namespace Telerik.Examples.WinControls.ListView.CustomItems

{

public partial class Form1 : ListViewExamplesControl

{

public Form1()

{

InitializeComponent();

this.radListView1.ItemSize = new Size(200, 300);

this.radListView1.AllowArbitraryItemHeight = true;

this.radListView1.ItemSpacing = 10;

this.radListView1.EnableKineticScrolling = true;

this.radListView1.ListViewElement.ViewElement.ViewElement.Margin = new Padding(0, 10, 0, 10);

this.radListView1.ListViewElement.ViewElement.Orientation = Orientation.Horizontal;

}

}



This is my code, it is very simple right now because I am still working on the figuring out the functionality 

of RadListView.  I've hard coded the orientation multiple times and printed it out in MessageBox but each time

MessageBox prints out vertical, for each of the 12 items in the Imagelist.  I was hoping you could explain why this

happens all of the time and a way to fix this.  Thank you for your time in this matter.  




using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Telerik.WinControls;
using System.IO;
using System.Linq;
using Telerik.WinControls.Layouts;
using Telerik.WinControls.UI;
 
namespace testingImageViewer
{
    public partial class RadForm1 : Telerik.WinControls.UI.RadForm
    {
        private int intImageHeight = 0;
        private int intImageWidth = 0;
        private string strFilePath = "";
        StackLayoutPanel stackLayout;
        LightVisualElement imageElement;
 
        Image myImage;
        public RadForm1()
        {
            InitializeComponent();
            radListview.ItemSize = new Size(200, 300);   
            radListview.AllowArbitraryItemHeight = true;
            radListview.EnableKineticScrolling = true;
            radListview.ListViewElement.ViewElement.Orientation = Orientation.Horizontal;
            MessageBox.Show(radListview.ListViewElement.ViewElement.Orientation.ToString());
        }
 
        public void fillImageList()
        {
            OpenFileDialog ofd = new OpenFileDialog();
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                myImage = Image.FromFile(ofd.FileName);
                strFilePath = ofd.FileName;
            }
            else
            {
                MessageBox.Show("open dialog didn't open");
            }
        }
 
        private void RadForm1_Load(object sender, EventArgs e)
        {
            fillImageList();
            imagelistPictures.Images.Add(myImage);             
            showImages();
        }
 
        private void showImages()
        {
            if (imagelistPictures.Images.Empty)
            {
                MessageBox.Show("list image preview is empty");
            }
            else
            {
                for (int i = 0; i < imagelistPictures.Images.Count; i++)
                {
                    if (imagelistPictures.Images[i] != null)
                    {
                        // radListview.Items.Add(listImagePreview.Images[i]);
                        //intImageWidth = listImagePreview.Images[i].Width;
                        //intImageHeight = listImagePreview.Images[i].Height;
                        // pictureBox1.Image = listImagePreview.Images[i];  // adds it to picture box, adjust height/width
 
 
                        // show the image
                        // radListview.Height = imagelistPictures.Images[i].Height;
                        // radListview.Width = imagelistPictures.Images[i].Width;
 
                        ListViewDataItem lvdi = new ListViewDataItem("Go Hokies");
                        lvdi.Image = imagelistPictures.Images[i];
                        lvdi.ImageAlignment = System.Drawing.ContentAlignment.MiddleCenter;
                        //lvdi.Size.
 
                        radListview.Items.Add(lvdi);
 
                        radListview.ListViewElement.ViewElement.Orientation = Orientation.Horizontal;
                        MessageBox.Show(radListview.ListViewElement.ViewElement.Orientation.ToString());
                    }
                    else
                    {
                        MessageBox.Show("contents of list are null, break");
                        break;
                    }
                }
            }
        }
 
 
 
    }
}

ListView

answered on 16 Jul 2013

2 answers

86 views

GridView Inline Adding of new records

Hi,

I have a gridview that is hooked up to a web service, when you edit a cell and move to another cell it calls an update on the web service to update the DB, all works very well.

However, I can't seem to get this functionality working with the 'add new row' row. How do I know when a user has moved away from teh add new row row, so I can then construct an entity object to send to the web services Add method?

Thanks in advance
M

GridView

answered on 15 Jul 2013

1 answer

165 views

GridView Record Navigation Methods

Hope the below button click methods can help someone in implementing records navigation (backward and forward) in RadGridView.

private void btnPrev_Click(object sender, EventArgs e)

{

if (gridview1.CurrentRow.Index > 0)

{

gridview1.ChildRows[gridview1.CurrentRow.Index - 1].IsCurrent = true;

}

private void btnNext_Click(object sender, EventArgs e)

{

if (gridview1.CurrentRow.Index < gridview1.ChildRows.Count - 1)

{

gridview1.ChildRows[gridview1.CurrentRow.Index + 1].IsCurrent = true;

}

GridView

answered on 15 Jul 2013

1 answer

85 views

Unable to bind checked nodes in Radtreeview

Hi there,
How can I bind an object like List<Person> to a RadTreeView according theirs true/false values (How can bind checkbox values to a column of List<Person>)?
I try google that but I can't find any related answer (It is available in ASP.NET AJAX).
So if there is Checkbox mode in RadTreeView for winforms, how can bind a datasource to check or uncheck checkboxes according data?

Regards,
Mohsen.

Treeview

answered on 13 Jul 2013

2 answers

158 views

GridViewMaskBoxColumn and standart mask.

Hi.

For now I'm using GridViewMaskBoxColumn with standart mask type and 00°00'00.00000'' as a mask.
I also changed promt char to 0:

private void CellBeginEdit(object sender, GridViewCellCancelEventArgs e)

{

RadMaskedEditBoxEditor editor = e.ActiveEditor as RadMaskedEditBoxEditor;

if (editor != null)

{

editor.MaskTextBox.PromptChar = '0';

}

...

}

The requirements has changed and now I need to show + or - before the mask so it should look like
+00°00'00.00000''. The most easiest way is to use #00°00'00.00000'', but in this case when I start edit
masktextbox looks like 000°00'00.00000'' which is very inconvenient. So I need some how to provide possibility to let use enter (choose)
+ or - and preserve the old mask (00°00'00.00000''). The regex is also not very convenient.

Is the any possibility to provide selection of a sign for standart mask?

My control version is 2011.2.11.831

Thanks in advance.

GridView

answered on 12 Jul 2013