Questions on UI for WinForms Forum

1 answer

85 views

Test if RadGridView.MasterTemplate.LoadFrom(datareader) is successful

Hello everybody
I would like to test if Test if RadGridView.MasterTemplate.LoadFrom (datareader) is successful and show a message box
Thanks so much

GridView

answered on 22 Nov 2019

7 answers

518 views

How to select the newly added new item in GridviewComboBoxColumn (DropDown style)

Hi,

I want the user to be able to insert a new item in the combobox (via the underlying TextBoxEditor).

When entered, the user should see the newly added item as selected in the combobox.

I'm probably missing an event or not making the add/set DataSource at the good place.

I'm doing everything in the CellEndEdit event handler of the grid.

Reproduce: double-click on "Type 1", type any text and change the column.

If you re-open the content of the combo, the new item is there

public partial class RadForm1 : Telerik.WinControls.UI.RadForm

{

private List<KeyValuePair<string, string>> _list;

public RadForm1()

{

InitializeComponent();

this.Load += RadForm1_Load;

radGridView1.CellEndEdit += RadGridView1_CellEndEdit;

}

private void RadForm1_Load(object sender, EventArgs e)

{

_list = new List<KeyValuePair<string, string>>();

_list.Add(new KeyValuePair<string, string>(TestType.type_1.ToString(), "Type 1"));

_list.Add(new KeyValuePair<string, string>(TestType.type_2.ToString(), "Type 2"));

_list.Add(new KeyValuePair<string, string>(TestType.type_3.ToString(), "Type 3"));

SetColumnDataset();

LoadData();

}

private void SetColumnDataset()

{

var comboColumn = radGridView1.Columns["columnCombo"] as Telerik.WinControls.UI.GridViewComboBoxColumn;

if (comboColumn != null)

{

comboColumn.DropDownStyle = RadDropDownStyle.DropDown;

comboColumn.DataSource = _list;

comboColumn.DisplayMember = "Value"; // name to show

comboColumn.ValueMember = "Key"; // name of element of Guid of specific service

}

private void LoadData()

{

radGridView1.Rows.Clear();

GridViewDataRowInfo rowInfo = new GridViewDataRowInfo(this.radGridView1.MasterView);

rowInfo.Cells["columnCombo"].Value = Guid.NewGuid().ToString();

rowInfo.Cells["columnCombo"].Value = TestType.type_3.ToString();

radGridView1.Rows.Add(rowInfo);

rowInfo = new GridViewDataRowInfo(this.radGridView1.MasterView);

rowInfo.Cells["columnCombo"].Value = Guid.NewGuid().ToString();

rowInfo.Cells["columnCombo"].Value = TestType.type_1.ToString();

radGridView1.Rows.Add(rowInfo);

}

void RadGridView1_CellEndEdit(object sender, GridViewCellEventArgs e)

{

// e.ActiveEditor.GetType()

if (e.Column == radGridView1.Columns["columnCombo"])

{

if (e.Value != null && e.Value.ToString() != String.Empty)

{

TestType enumVal;

bool isEnum = Enum.TryParse<TestType>(e.Value.ToString(), out enumVal);

if (isEnum)

{

// enumVal holds the value

}

else

{

AddNewColumnItem(Guid.NewGuid().ToString());

}

else

{

AddNewColumnItem(Guid.NewGuid().ToString());

}

private void AddNewColumnItem(string name)

{

if (!_list.Any(x => x.Key == name))

{

_list.Add(new KeyValuePair<string, string>(name, string.Format("Type {0}", name)));

SetColumnDataset();

}

public enum TestType

{

type_1,

type_2,

type_3

}

GridView

answered on 21 Nov 2019

1 answer

143 views

Drag&Drop for CollapsiblePanel

I add RadCollapsiblePanel programmaticly to a form (Dock Top).

Is it possible to change the order of the CollapsiblePanel via Drag&Drop?

An alternative could be 2 Buttons (Up/Down) but D&D will be the best solution.

CollapsiblePanel

answered on 21 Nov 2019

3 answers

863 views

SelectedValue Problem (resolved)

I was facing problem in setting the SelectedValue property of MutiColumnComboBox. Even after spending few hours in search and trying doing different things I couldn't figure out the problem. Just before submitting the support ticket I figured out that you need to set the property using the Object not the value. Here is the example.

//This doesn't work

MultiColumnComboBox.SelectedValue = 1;

//This is the correct way of seeting the value

MultiColumnComboBox.SelectedValue = "1";

//Another way

MultiColumnComboBox.SelectedValue = Convert.ToInt32(intValue).ToString();

Posting the as thread so others can save time.

Thanks
Muhammad Waseem

MultiColumn ComboBox

answered on 21 Nov 2019

2 answers

185 views

read html from editor

Hi there,

I'm using the RadRichTextEditor the first time and I'm wondering if it is somehow possible to get only the HTML out of the editor. I've thought about something like:

1.string htmlText = txtText.Text; // while txtText is my RadRichTextEditor

But this returns me the plain text, without any html tags. I've seen I can export and import it using a HtmlFormatProvider. This worked great, but it is not exactly the thing I want, since it returns the whole HTML document instead of only the html I have in my text editor.

1.HtmlFormatProvider prov = new HtmlFormatProvider();

2.string htmlText = prov.Export(txtText.Document);

The output I wish would be something like this:

1.string htmlText = "This is a <b>bold</b> text. Great, isn't it?"

Regards,
Roman

RichTextEditor

answered on 19 Nov 2019

1 answer

239 views

Camera slow frames on initial start up

I have a simple test Form with just the RadWebCam control on it. When you first open the form, the camera runs at about 10-15fps. Once you take a snapshot it seems to move up fps.(v4.0.30319 - Win10, I7vPro, 16Ram)

Why does it shut the camera off every time you take a snapshot? How can I use it to capture multiple images one after another if it shuts the camera off and displays the image in the viewer after every snapshot?

WebCam

answered on 19 Nov 2019

8 answers

1.7K+ views

Clear Row/Cell selection in RadGrid

How can I clear the row selection in RadGrid? grid.ClearSelection() does not working. I'm using version 2017.1.221.40. Thanks in advance.

GridView

answered on 19 Nov 2019

3 answers

172 views

Not displaying Spreadsheet data

Hello Telerik Team , Good time
When I open an Excel file in my program,The data is not displayed but when I open an Excel file in Demo Application - Telerik UI for WinForms The data is displayed, Although both visual studio settings and manifest file are the same
The relevant photo was attached.
thanks a lot

Spreadsheet

answered on 18 Nov 2019

1 answer

129 views

Gestures in Diagram

Hello,

I have a RadDiagram in a winform that displays an image (RadDiagramShape) with a box (RadDiagramShape) over it. A third RadDiagramShape is used to display the region of the first image that the box is over. Mouse events to control dragging and mouse scroll to make the box larger/smaller so that the user can move around the image and zoom in/out. Similarly, the third shape has events for dragging and mouse scroll which controls the box as well.

I am trying to enable similar functionality with touch gestures, but am having some difficulties. I can only seem to enable gestures for the diagram itself, but not for the RadDiagramShapes within it. When I allow zoom gestures on the RadDiagram, it zooms the RadDiagram even though IsZoomEnabled = false. This seems to prevent the zoom for the mouse controls, but not for the gestures. It also moves the diagram around in some cases, although I can't seem to figure out what is moving as the position isn't changing. Pan and Drag are not enabled.

I do not want to zoom into or move the RadDiagram. I want to catch the gesture, and control the size of the box so that the user can zoom in/out as they do with the mouse controls.

In order to do this, I would have to cancel the event and manually process, but I can't seem to figure out a way to do this.

Any ideas?

Thanks

Diagram, DiagramRibbonBar, DiagramToolBox