Questions on UI for WinForms Forum

4 answers

1.3K+ views

hi telerik

i'm use Telerik themes "Fluent" and "FluentDark" in my project. with a "ToggleSwitcher" and below code, change my project theme at runtime without any issue.

but, most controls like button, have image. in "Fluent" i'm use Black image, and must use White image in "FluentDark" theme. Now, have any solution to change all (maybe 100 Controls) image/icon at runtime? or have any solution for switch iamge between Dark and Light theme?

ThemeResolutionService.ApplicationThemeName = "Fluent";

Themes and Visual Style Builder

answered on 16 Dec 2019

27 answers

1.1K+ views

FILTER PROBLEM

i can not set filter (Contains, start with...) in radgrid.

i think radcontrols avanced tutorial is necesary to consolidate this product.

GridView

answered on 16 Dec 2019

5 answers

666 views

[Solved] Reset cell format

I have a GridView where I am changing the cell BackColor when the value is changed:

void TelerikGridView_CellValueChanged(object sender, GridViewCellEventArgs e)

{

if (e.Row.Tag == null)

e.Row.Tag = e.Column.Name;

if (!e.Row.Tag.ToString().Contains(e.Column.Name))

e.Row.Tag += e.Column.Name;

}

void TelerikGridView_CellFormatting(object sender, CellFormattingEventArgs e)

{

if (e.Row.Tag != null && e.Row.Tag.ToString().Contains(e.Column.Name))

{

e.CellElement.DrawFill = true;

e.CellElement.GradientStyle = Telerik.WinControls.GradientStyles.Solid;

e.CellElement.BackColor = Color.Red;

}

else

{

e.CellElement.ResetValue(LightVisualElement.BackColorProperty, Telerik.WinControls.ValueResetFlags.Local);

e.CellElement.ResetValue(LightVisualElement.GradientStyleProperty, Telerik.WinControls.ValueResetFlags.Local);

e.CellElement.ResetValue(LightVisualElement.DrawFillProperty, Telerik.WinControls.ValueResetFlags.Local);

}

This is working as expected, now I want to add a "Reset" button, when I click on it I would like to reset or remove the format of all the cells that have been changed, how can I accomplish this?

Regards,

Alberto

GridView

answered on 16 Dec 2019

1 answer

138 views

get all row with checkboxcolumn checked

How I can loop through all row of my grid and detect only row with checkbox column checked ?

i use this solution and got error :

-------------------------------------------------------------------------------------------------------

Error:

"System.NullReferenceException: 'Object reference not set to an instance of an object.'Telerik.WinControls.UI.GridViewCellInfo.Value.get returned null."
-------------------------------------------------------------------------------------------------------

Code:

IList<GridViewRowInfo> gridRows = new List<GridViewRowInfo>();
foreach (GridViewRowInfo rowInfo in radGridView.ChildRows)
{
    bool isChecked = (bool)rowInfo.Cells["CheckboxColumn"].Value;
    if (isChecked == true)
    {
        gridRows.Add(rowInfo);
    }
}

GridView

answered on 13 Dec 2019

1 answer

1.0K+ views

get all row with checkboxcolumn checked

How I can search through all row of my grid and detect only row with checkbox column checked ? ( Note : user change value and select checkbox at run time ... )

i use this code and got an error :

------------------------------------------------------------------------------------------------------------------------------------

Error :

System.NullReferenceException: 'Object reference not set to an instance of an object.'

Telerik.WinControls.UI.GridViewCellInfo.Value.get returned null.

------------------------------------------------------------------------------------------------------------------------------------

Code :

IList<GridViewRowInfo> gridRows = new List<GridViewRowInfo>();
foreach (GridViewRowInfo rowInfo in radGridView.ChildRows)
{
    bool isChecked = (bool)rowInfo.Cells["CheckboxColumn"].Value;
    if (isChecked == true)
    {
        gridRows.Add(rowInfo);
    }
}

------------------------------------------------------------------------------------------------------------------------------------

GridView

answered on 13 Dec 2019

1 answer

166 views

How to binding customize nested XML to TreeView?

XML sample:

<?xml version="1.0" encoding="utf-8"?>
<TemplateLibrary xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" Version="1.0" xmlns="http://www.example.org/NewXMLSchema">
<Category name="Decks">
<Category name="Standard Templates">
<Category name="Deck Slabs">
<Template name="Slab with constraints - 2 Lanes" guid="e4d44934-ff00-4c54-9de7-304896e0df45" lastRevisedDate="2015-08-31" lastRevisedBy="Sri.Kanneganti" versionMajor="1" versionMinor="32">
</Template>
</Category>
</Category>
</Category>
</TemplateLibrary>

my expected effect is like the attcached picture.

Treeview

answered on 13 Dec 2019

1 answer

156 views

Rad Form TitleBar Collapse

How can I collapse the Titlebar ?

this.FormElement.TitleBar.Visibility = ElementVisibility.Collapsed;

=> Not working

TitleBar

answered on 13 Dec 2019

3 answers

249 views

'Item' is not member RadGridView

Code

Public Function NuevoExport(ByVal Grilla As RadGridView, ByVal Grilla2 As RadGridView) As Boolean

For fila = 0 To Grilla.RowCount - 1
For col As Integer = 0 To Ncol - 1
exHoja.Cells.Item(fila + 2, col + 1) = Grilla.Item(col, fila).Value
Next
Next

GridView

answered on 13 Dec 2019

1 answer

194 views

Set scrollbar on same position after update data

So after i update data, gantt resets the position to the starting position, and i want to remain the same position

how to do that ?

GanttView

answered on 12 Dec 2019

6 answers

214 views

[Solved] RadPropertyChanged event of columns not fired after loading grid layout

I have a RadGridView which Layout should be saved whenever a column is added or removed by the user via columnChooser.

I added this code in Form.OnLoad:

foreach (GridViewDataColumn column in myGrid.Columns)

{

column.RadPropertyChanged += GridViewColumn_RadPropertyChanged;

}

And here is GridViewColumn_RadPropertyChanged event:

if (e.Property.Name == "IsVisible")

{

myGrid.SaveLayout(myPath);

}

This works fine - as long as I do not load an existing GridLayout. When I check in Form.OnLoad if there is an saved layout file and load that layout file for my Grid, the RadPropertyChanged event will not be fired anymore. Is there something additional I have to do with RadGridView after a layout has been loaded successfully?

GridView

answered on 12 Dec 2019