Questions on UI for WinForms Forum

22 answers

660 views

If anyone need it, just use the code and drag and drop :) (Based on example code)




using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Telerik.WinControls;
using Telerik.WinControls.UI;
using System.Drawing;
  


namespace Project
{
    public partial class RadDataGridViewDragDrop : RadGridView
    {
        public RadDataGridViewDragDrop()
        {
            InitializeComponent();
            SubscribeForGridEvents();
            this.ReadOnly = true; 
            this.MultiSelect = true;
            this.MasterTemplate.AllowRowReorder = true;
            this.GridBehavior = new RadGridViewDragDropBehavior();
        }
 
        private void SubscribeForGridEvents()
        {
            RadDragDropService dragDropService = this.GridViewElement.GetService<RadDragDropService>();
            dragDropService.PreviewDragOver += new EventHandler<RadDragOverEventArgs>(dragDropService_PreviewDragOver);
            dragDropService.PreviewDragDrop += new EventHandler<RadDropEventArgs>(dragDropService_PreviewDragDrop);
            dragDropService.PreviewDragHint += new EventHandler<PreviewDragHintEventArgs>(dragDropService_PreviewDragHint);
        }


        private int GetTargetRowIndex(GridDataRowElement row, Point dropLocation)
        {
            int halfHeight = row.Size.Height / 2;
            int index = row.RowInfo.Index;
            if (dropLocation.Y > halfHeight)
            {
                index++;
            }
            return index;
        }
        private void InitializeRow(GridViewRowInfo destRow, GridViewRowInfo sourceRow)
        {
            foreach (GridViewCellInfo s in sourceRow.Cells)
            {
                destRow.Cells[s.ColumnInfo.Name].Value = s.Value;
            }
        }
        private void MoveRows(RadGridView targetGrid, RadGridView dragGrid, IList<GridViewRowInfo> dragRows, int index)
        {
            for (int i = dragRows.Count - 1; i >= 0; i--)
            {
                GridViewRowInfo row = dragRows[i];
                if (row is GridViewSummaryRowInfo)
                {
                    continue;
                }
                GridViewRowInfo newRow = targetGrid.Rows.NewRow();
                this.InitializeRow(newRow, row);
                targetGrid.Rows.Insert(index, newRow);
                row.IsSelected = false;
                dragGrid.Rows.Remove(row);
                index++;
            }
        }
 
        #region Drag & drop logic
 
        private void dragDropService_PreviewDragDrop(object sender, RadDropEventArgs e)
        {
            GridDataRowElement rowElement = e.DragInstance as GridDataRowElement;
            if (rowElement == null)
            {
                return;
            }
            RadItem dropTarget = e.HitTarget as RadItem;
            RadGridView targetGrid = dropTarget.ElementTree.Control as RadGridView;
            if (targetGrid == null)
            {
                return;
            }
            RadGridView dragGrid = rowElement.ElementTree.Control as RadGridView;
            if (targetGrid != dragGrid)
            {
                e.Handled = true;
                RadGridViewDragDropBehavior behavior = (RadGridViewDragDropBehavior)dragGrid.GridBehavior;
                GridDataRowElement dropTargetRow = dropTarget as GridDataRowElement;
                int index = dropTargetRow != null ? this.GetTargetRowIndex(dropTargetRow, e.DropLocation) : targetGrid.RowCount;
                this.MoveRows(targetGrid, dragGrid, behavior.SelectedRows, index);
            }
        }
 
        private void dragDropService_PreviewDragOver(object sender, RadDragOverEventArgs e)
        {
            if (e.DragInstance is GridDataRowElement)
            {
                e.CanDrop = e.HitTarget is GridDataRowElement || e.HitTarget is GridTableElement || e.HitTarget is GridSummaryRowElement;
            }
        }
 
        private void dragDropService_PreviewDragHint(object sender, PreviewDragHintEventArgs e)
        {
            GridDataRowElement dataRowElement = e.DragInstance as GridDataRowElement;
            if (dataRowElement != null && dataRowElement.ViewTemplate.MasterTemplate.SelectedRows.Count > 1)
            {
                //e.DragHint = new Bitmap(this.imageList1.Images[6]);        
                e.UseDefaultHint = false;
            }
        }
        #endregion
    }
 
    public class RadGridViewDragDropBehavior : BaseGridBehavior
    {
        List<GridViewRowInfo> selectedRows = new List<GridViewRowInfo>();
        public List<GridViewRowInfo> SelectedRows
        {
            get { return this.selectedRows; }
        }
 
        public override bool OnMouseDown(MouseEventArgs e)
        {
            selectedRows.Clear();
            bool result = base.OnMouseDown(e);
            if ((Control.ModifierKeys & Keys.Control) == Keys.Control ||
                (Control.ModifierKeys & Keys.Control) == Keys.Shift)
            {
                selectedRows.AddRange(this.GridControl.SelectedRows);
            }
            else
            {
                selectedRows.Add(this.GridControl.CurrentRow);
            }
            return result;
        }
    }
}

GridView

answered on 17 Aug 2016

2 answers

360 views

Show Icon both in item list and selected item on RadDropdownList

Dear All,

Right now, i'm using telerik RadDropdownList 2016 Q1. And ItemList have Icon Image above. It show ok on DropDown list, but not show when I selected one Item.

How can I config for it show icon image both in ItemList and Selected Item.

Thanks so much for all helping!!!

DropDownList

answered on 17 Aug 2016

17 answers

334 views

PivorGrid1

How can i show the values of an item while double clicking on any of the value.

I mean is when we point our mouse pointer to an of the item in grid,then there will be a tooltip showing the current details of that item.How can i show it in message box while double clicking on it?

Can anyone help me Please...

PivotGrid and PivotFieldList

answered on 16 Aug 2016

5 answers

407 views

Issue with Filters when added programmatically

I have a requirement to add a default filter to the my GridView. Therefore I do this simply using the following code:

FilterDescriptor filterDescriptor = new FilterDescriptor();
filterDescriptor.PropertyName = "DistributionStatus";
filterDescriptor.Value = "Active";
filterDescriptor.Operator = FilterOperator.IsNotEqualTo;
filterDescriptor.IsFilterEditor = true;

This is simply code taken from the documentation and modified.

This applies the restriction that I require, but when I open up the filter on screen as a user, I do not see all the values available in the column, so I am unable to remove this filter... Please see attached file (1.png) for an example.

If however, I add a random filter that does not affect the results (2.png), I now see all my available options (3.png). Can anyone suggest if this is a bug? or maybe a setting I need to update or a forced refresh of some kind?

GridView

answered on 16 Aug 2016

1 answer

666 views

Radio/Checkbox Text alignment (bug??)

Hi folks, this is not a Telerik bug specifically - its a bug (I think) with the underlying base Checkbox and Radiobutton controls that I believe the Telerik controls inherit. Anyway let me describe the issue and maybe someone out there knows why this is...It's not super important its just one of those things that's bugged me for years (this bug has been around since the very first release of Visual Studio.)

I build business to business desktop applications. That means there are a ton of data-entry forms and if you pay any attention at all to quality UI (if you didn't you wouldn't be using Telerik controls!) you like to have your data-entry form elements line up. It's easier on the eyes and far easier for Data-Entry people to keep track of their place. Anyway lets pretend you have a form with Last Name, First Name text boxes and Are you a Supervisor checkbox.

You're not going to just dump the text boxes on the form - you'll have a label preceding the text boxes and a lot of folks (myself included) you'll use a colon to separate the label from the Textbox and to give you something to align to like this:

First Name: [__________]

Last Name: [__________]

Supervisor: [X]

FYI. What I've done in text above isn't possible with two labels, two text boxes and one check box. Don't believe me? Try it.

See the default (for whatever reason) for Checkboxes (and radios for that matter) is to put the data-input portion of the control BEFORE the text so your checkbox would look like this: [X] Supervisor:

So now your data-inputs no longer line up...no problem! Just change the RightToLeft property from false to true right? *wrong!*

That's the bug. If you set RightToLeft = True your checkbox would like exactly like this:

:Supervisor [X]

Yup...that's not a type. The colon gets shoved in front of the text for some odd reason and this is the thing that's been bugging me for over a decade and I've never found anyone who can give me a reasonable answer as to why in the heck Microsoft would do that. BTW the Colon doesn't matter. You can use any punctuation mark or multiple combinations of them - if they're at the END of your "Text" property, they'll get shoved to the front of the line.

I've long ago given up trying to do the above. Instead I use THREE labels, two text boxes and a Checkbox with no Text property then I add the code in for clicks and mouse-overs etc on the label to trigger the same event for the check box.

Again, its silly I know! I'm a new, huge fan of Telerik and thought maybe someone out there knows whats up with this and can reply.

Thanks everyone :)

-C

General Discussions

answered on 16 Aug 2016

2 answers

174 views

Context menu on RadAutoCompleteBox items

Hi!

I'm trying to add a context menu for the RadTokenizedTextItem items in the RadAutoCompleteBox.Items collection. Something like the mockup-image i attached to this post.

The RadAutoCompleteBox itself has both a ContextMenu and a RadContextMenu property, but the RadTokenizedTextItem have none of these.To be clear: I want to be able to right-click an individual token in the RadAutoCompleteBox, click an option in the menu, and then catch some kind of event that includes information about that token in the eventargs. Is this even possible? If so, how would I go about doing this?

I'm using UI for WinForms.

Thanks,

Aleksander

AutoCompleteBox

answered on 16 Aug 2016

11 answers

586 views

Hiding ToolWindow toolbar?

I have set my Docking.ToolWindow.Text to nothing and the ToolCaptionButtons to None. How can I hide the toolbar altogether? Ideally I would like to be able to programmatically make it reappear on mouse over. Is there a property for this somewhere?

Thanks,

G

Dock

answered on 15 Aug 2016

8 answers

795 views

RadMaskedEditBox enter currency values without currency symbol without currency symbol

Hello,

In an application I need to enter some large numbers and the client wants to format the number as he types (add currency, thousands separator,etc). I tried to use RadMakedEditBox with the "f" mask, it does not respect culture, I tried using "c" mask, it kinda works but I need to get rid of the currency symbol. With the "c" mask I can change the currency symbol but I am unable to change it to String.Empty as I wish - the control crashes (the closest thing is to set " " - a single space - but it's not very pretty, the client does not accept that).

Is there any way to format the value using culture parameters without currency sign? I also tried working with "p" format but I didn't find a way to hide the percent sign. I seen another thread with a suggestion for using a spinner, that is not good for me.

Thank you.

MaskedEditBox

answered on 15 Aug 2016

1 answer

117 views

Selection rectangle issues

Related screenshots:

Scr1: http://prnt.sc/c4t86p

Scr2: http://prnt.sc/c4tazq

Description:

1) if AddNewRow.True and AddNewRowPosition.Top the top line of cell selection rectangle is eated by half;

2) if SelectionMode.CellSelect the bottom line of cell selection rectangle is eated by half.

GridView

answered on 15 Aug 2016

2 answers

175 views

Export to CSV with programmatically generated grid

I'm trying to use the ExportToCSV function and I can see it works ok with one of my grids, one that was created with the Designer. but when trying to generate a GridView on the fly it'll export a blank CSV, even when the grid's DataSource is filled with records.

01.private void radButton1_Click(object sender, EventArgs e)

02.{

03. RadGridView tempGrid = new RadGridView();

04.

05. GridViewTextBoxColumn firstName = new GridViewTextBoxColumn();

06. firstName.FieldName = "fname";

07. tempGrid.Columns.Add(firstName);

08.

09. GridViewTextBoxColumn lastName = new GridViewTextBoxColumn();

10. lastName.FieldName = "lname";

11. tempGrid.Columns.Add(lastName);

12.