Questions on UI for WinForms Forum

1 answer

1.3K+ views

I'm using Telerik WinControls 2014.3.1104.40 in a C# environment.

I have a gridview that has a number of preset columns, as well as zero or more additional, user-defined columns. I need a way to load this data into the grid.

Currently, I am trying to use C# "dynamic" objects, in hope that the FieldName property of each column will access that field of the dynamic object; but the grid does not appear to load anything from a list of dynamic objects.

There should be data loaded into the cells, but they show up blank. Here is a sample of the code that is not working:

private void LoadData()

{

radGridView1.DataSource = new List<dynamic>()

{

CreateDynamicObject(1),

CreateDynamicObject(2),

CreateDynamicObject(3),

};

}

private dynamic CreateDynamicObject(int id)

{

dynamic ret = new ExpandoObject();

ret.Id = id;

ret.Prop1 = "Property 1: " + id;

ret.Prop2 = "Property 2: " + id;

return ret;

}

If List<dynamic> data sources are not supported, what other method would be most similar?

GridView

answered on 18 Aug 2015

3 answers

469 views

List View in Cell of GridView

Hello

I succeeded to put a listview in a cell of a grid. But I have some problems with it.

1. Why the first listview item is always highlighted.
2. How can I add the possibility to work with keyboard to select some listview items instead of mouse.

public class CheckListBoxCellElement : GridDataCellElement

{

public CheckListBoxCellElement(GridViewColumn column, GridRowElement row)

: base(column, row)

{

}

RadListViewElement radListElement;

protected override void CreateChildElements()

{

base.CreateChildElements();

radListElement = new RadListViewElement();

radListElement.ShowCheckBoxes = true;

radListElement.AllowArbitraryItemHeight = true;

radListElement.ViewType = ListViewType.IconsView;

radListElement.VisualItemFormatting += new ListViewVisualItemEventHandler(radListElement_VisualItemFormatting);

radListElement.ItemCheckedChanged += new ListViewItemEventHandler(radListElement_ItemCheckedChanged);

this.Children.Add(radListElement);

}

void radListElement_VisualItemFormatting(object sender, ListViewVisualItemEventArgs e)

{

BaseListViewVisualItem lvi = e.VisualItem as BaseListViewVisualItem;

lvi.DrawBorder = true;

lvi.DrawFill = true;

lvi.CanFocus = true;

}

void radListElement_ItemCheckedChanged(object sender, ListViewItemEventArgs e)

{

if (e.Item.CheckState == Telerik.WinControls.Enumerations.ToggleState.On)

{

PropertyValue val = (PropertyValue)e.Item.DataBoundItem;

val.Selected = true;

}

else

{

PropertyValue val = (PropertyValue)e.Item.DataBoundItem;

val.Selected = false;

}

protected override void SetContentCore(object value)

{

IList list = (IList)value;

radListElement.DataSource = list;

radListElement.DisplayMember = "Name";

radListElement.ValueMember = "ID";

}

protected override Type ThemeEffectiveType

{

get

{

return typeof(GridDataCellElement);

}

public override bool IsCompatible(GridViewColumn data, object context)

{

return data is CheckListBoxColumn && context is GridDataRowElement;

}

public class CheckListBoxColumn : GridViewDataColumn

{

public CheckListBoxColumn(string fieldName)

: base(fieldName)

{

}

public override Type GetCellType(GridViewRowInfo row)

{

if (row is GridViewDataRowInfo)

{

return typeof(CheckListBoxCellElement);

}

return base.GetCellType(row);

}

public class Data

{

public string Name { get; set; }

public IList Field { get; set; }

}

public partial class MYForm : Form

{

public MYForm()

{

InitializeComponent();

Init();

}

private void Init()

{

GridViewTextBoxColumn column1 = new GridViewTextBoxColumn("Name");

ksGrid.Columns.Add(column1);

CheckListBoxColumn column2 = new CheckListBoxColumn("Field");

ksGrid.Columns.Add(column2);

column2.Width = 250;

ksGrid.AutoGenerateColumns = false;

ArrayList list = new ArrayList();

IList values1 = new ArrayList();

values1.Add(new PropertyValue() { ID = 1, Name = "Blue" });

values1.Add(new PropertyValue() { ID = 2, Name = "Yellow" });

values1.Add(new PropertyValue() { ID = 3, Name = "Red" });

Data data1 = new Data { Name = "Color", Field = values1 };

list.Add(data1);

IList values2 = new ArrayList();

values2.Add(new PropertyValue() { ID = 4, Name = "M" });

values2.Add(new PropertyValue() { ID = 5, Name = "L" });

values2.Add(new PropertyValue() { ID = 6, Name = "XL" });

Data data2 = new Data { Name = "Size", Field = values2 };

list.Add(data2);

ksGrid.DataSource = list;

object ob = ksGrid.Rows[1];

}

GridView

answered on 17 Aug 2015

2 answers

310 views

on enter key copy cell values from previous row

Hi,
to facilitate and speed up insert row, when user press enter key all blank cell in current row must be copied from same cell (same column) of previous row.

At the begin the grid is blank, it not have datasource but only template for columns, user can add row by new row grid feature.

I have some problem when the edit row is the new row (not jet added to rows grid collection) and cell is in edit mode.
I try to create a custom GridBehavior to do this, but if row in edit is the new row i can't access it.

Thank you very much.

GridView

answered on 17 Aug 2015

1 answer

250 views

Change PDF Navigator Icons and Load from Stream

Dear Telerik Team,

It's possible to customize the PDF Navigator icons?

How can i do to load a PDF that i put inside my solution or inside of a database?

Kind regards

PdfViewer and PdfViewerNavigator

answered on 17 Aug 2015

7 answers

1.2K+ views

ScrollablePanel not showing scrollbar

Hi there,

i have the following problem:

I have a RadScrollablePanel.

Inside this Panel i added two RadGroupBox-Controls.

The first is positioned in the upper left corner with Anchor = Left Top Right and minimum size of 300

The second is positioned in the upper right corner with Anchor = Top Right.

Now when resizing my Form, i expected when the Minium size is reached, the Scrollable Panel should show scrollbar.

I added an example project

Thanks Florian Keller

ScrollablePanel

answered on 17 Aug 2015

5 answers

438 views

TimePicker - Clear Button

Hi

For the TimePicker editor is there a 'Clear' button or can one be added (similar to that available with the DateTimePicker)?

Thanks

Adrian

Calendar, DateTimePicker, TimePicker and Clock

answered on 14 Aug 2015

3 answers

109 views

Rangebar

Hello
is there any way to have a rangebar where y_axis is a date (05/25/2015 11:00) and the category is a number ?
If so could I have an example
Thank you for you help

General Discussions

answered on 14 Aug 2015

6 answers

1.0K+ views

Change Image in GridViewImageColumn

Hi,
     I have 4 columns in RadGridView.

   column0---->ImageColumn
   column1 ---> ImageColumn
   column2---> textColumn   ---> hidden column
   column3--->textColumn    ----> hidden column

Based on the value in the text column (column2) i want to change the image in the (column0).

Based on the value in the text column (column3) i want to change the image in the (column1).

Most probably i have 5 different   values comming into each textColumn.

Currently i implemented this by handling viewRowformatting event .

I see a drastic sluggish when user scrolls through the Gridview. Please suggest a better way to do this.

Thank you,
Raja.

GridView

answered on 14 Aug 2015

3 answers

231 views

Centering Text using a Visual Element

I am customizing a tile being put into a Panorama. I want some text to the lower part of the tile. I've done this by creating a "LightVisualElement" and adding it to the tile's children... I then add a RadLabelElement to that VisualElement and set it's text. I would like that ext to be centered to the lower middle of the tile, however nothign I can do can make this happen.

I am setting the VisualElement's alignment to BottomCenter, and tried the same with the RadLabelElement. Any suggestions would be greatly appreciated.

LightVisualElement lowerElement;

lowerElement.Alignment = ContentAlignment.BottomCenter;

lowerElement.StretchHorizontally = true;

tile.Children.Add(lowerElement);

RadLabelElement deviceInfo = new RadLabelElement();

deviceInfo.StretchHorizontally = true;

deviceInfo.TextAlignment = ContentAlignment.BottomCenter;

deviceInfo.Alignment = ContentAlignment.BottomCenter;

lowerElement.Children.Add(deviceInfo);

etc.... none of that helps.

Panorama

answered on 14 Aug 2015

2 answers

127 views

event that fires when user removes a group

If you have a look at http://www.telerik.com/help/winforms/gridview-grouping-basic-grouping.html, it talks about the grouping feature that comes with the RadGridView.

I would like to know if there is an event that fires when the user removes a group (clicks on the X in the top right corner of a group). Is there such an event?

GridView

answered on 13 Aug 2015