Questions on UI for WinForms Forum

2 answers

143 views

GridViewComboBoxColumn out of focus when scrolling

Hi,

I'm using Telerik.WinControls.GridView version 2012.1.321.20.
I have a GridView with a GridViewComboBoxColumn, and the problem I have is that when the box is open and I click on the scroll square- than it's like the focus is out and the comboBox is closed (it's like freezing for 2 seconds and than closing...).

Also, I'm using the next definitions, as you recommended before:

public class CustomDropDownListEditor : RadDropDownListEditor

{

protected override RadElement CreateEditorElement()

{

return new CustomDropDownListEditorElement();

}

public class CustomDropDownListEditorElement : RadDropDownListEditorElement

{

protected override RadPopupControlBase CreatePopupForm()

{

this.Popup = new CustomDropDownPopupForm(this);

this.Popup.VerticalAlignmentCorrectionMode = AlignmentCorrectionMode.SnapToOuterEdges;

this.Popup.SizingMode = this.DropDownSizingMode;

this.Popup.Height = this.DropDownHeight;

this.Popup.HorizontalAlignmentCorrectionMode = AlignmentCorrectionMode.Smooth;

this.Popup.RightToLeft = this.RightToLeft ? System.Windows.Forms.RightToLeft.Yes : System.Windows.Forms.RightToLeft.Inherit;

this.WirePopupFormEvents(this.Popup);

return Popup;

}

public class CustomDropDownPopupForm : DropDownPopupForm

{

public CustomDropDownPopupForm(RadDropDownListElement owner): base(owner) {}

public override string ThemeClassName

{

get { return typeof(DropDownPopupForm).FullName; }

set {}

}

public override void ClosePopup(PopupCloseInfo info)

{

base.ClosePopup(info);

if (info.CloseReason == RadPopupCloseReason.Keyboard)

{

((RadGridView)this.OwnerElement.ElementTree.Control).EndEdit();

}

protected override void OnMouseUp(MouseEventArgs e)

{

base.OnMouseUp(e);

((RadGridView)this.OwnerElement.ElementTree.Control).EndEdit();

}

You should handle the EditorRequired event to replace the editor:

void radGridView1_EditorRequired(object sender, EditorRequiredEventArgs e)

{

if (e.EditorType == typeof(RadDropDownListEditor))

{

e.EditorType = typeof(CustomDropDownListEditor);

}

What should I do in order to not loose the focus when click on scrolling? I need the user to scroll up/doun and choose another option from the list.

I'm attaching an image of my comboBox.

Thanks,
Hila.

GridView

answered on 23 Dec 2012

4 answers

290 views

Rad DateTimePicker - Invalid Date Format Exception

Hello,

I use a Rad DateTimePicker in a certain application. What I want to achieve is to get the date that the user selects, along with the time of course, and send those using JScript to an asmx webservice as one of its arguments. What I did was that I sent the datetime as string from the JScript file and in the webservice I tried to parse that string back to datetime format using convert.todatetime method and I tried several other conversion methods but my problem was always one; and that is the string that's being sent is not recognized as a correct "convertible" datetime.

I debugged, and it's always sent as, for example, "2012-12-13-08-02-05" [this corresponds to 13/12/2012 08:02:05]. As you can see, this string really is not in one of the acceptable formats that the parsing methods accept.

I tried to change the input dateformat of the datetimepicker and it does change but only in displaying; it does not change in the string according to what I want [I mean the format I set is reflected on display only and not on save].

I'd really appreciate your help, thank you.

Calendar, DateTimePicker, TimePicker and Clock

answered on 22 Dec 2012

3 answers

105 views

Drag and Drop In two listbox

Hi, i'm trying to do the Drag and Drop like the demo, but my first listbox it's conected with my dataset and when I do the drag and drop, gives me this error:

Data bound items can not be removed. Remove items from the data source instead.

If you can explain to me how to fix this. Thank You.

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 21 Dec 2012

1 answer

155 views

using linq to dynamic create chartview series

For those who might want to use this, I have created a quick sample on how to use linq to create dynamic series for chartview:

Example is created in VS2010 / VB.NET

Make sure you import:
System.Data.DataSetExtensions.dll
to use linq.

Me.RadChartView1.ShowLegend = True

Me.RadChartView1.ShowTitle = True

Me.RadChartView1.Title = "Sold products per country"

Dim graphSeries As New DataTable()

graphSeries.Columns.Add("Category", GetType(String))

graphSeries.Columns.Add("Value", GetType(Integer))

graphSeries.Columns.Add("XValue", GetType(String))

graphSeries.Rows.Add("Netherlands", 10, "2011")

graphSeries.Rows.Add("USA", 12, "2011")

graphSeries.Rows.Add("Germany", 7, "2011")

graphSeries.Rows.Add("Netherlands", 25, "2012")

graphSeries.Rows.Add("USA", 40, "2012")

graphSeries.Rows.Add("Germany", 25, "2012")

Dim productGroups = From p In graphSeries _

Group p By Category = p.Field(Of String)("Category") Into Group _

Select Category, ProductGroup = Group

For Each g In productGroups

Dim barSeries As New Telerik.WinControls.UI.BarSeries("Value", "Category")

barSeries.Name = g.Category

barSeries.ValueMember = "Value"

barSeries.CategoryMember = "XValue"

barSeries.ShowLabels = True

barSeries.LegendTitle = g.Category

Me.RadChartView1.Series.Add(barSeries)

barSeries.CombineMode = Telerik.Charting.ChartSeriesCombineMode.Stack

barSeries.DataSource = g.ProductGroup.CopyToDataTable

Next

ChartView

answered on 21 Dec 2012

1 answer

156 views

Image on commandbar button is not transparent.

I have set bmp images on commandbar buttons on the commandbar strip element. But, the images area not showing transparent..

Please find the attachments

CommandBar

answered on 21 Dec 2012

1 answer

157 views

Paste From Excel into Grid view?

With the standard datagrid view in vs2010, I can highlight several rows in an excel sheet, containing, say title ID numbers, then left click on the datagrid and paste those values into the grid.

Is that even possible with the telerik grid view ?

Thanks.

GridView

answered on 21 Dec 2012

1 answer

112 views

Using radChart with Entity Framework

Is there an example or can someone assist me in creating a simple bar chart while consuming data using entity framework?
The query could be as simple as:

SELECT        COUNT(Invoice_Header_Id) AS [Total Invoices], Created_By
FROM            Accounts_Payable.Invoice_Header
WHERE        (Date_Created >= CONVERT(DATETIME, '2012-12-19 00:00:00', 102))
GROUP BY Created_By

I don't have an entity created yet. I would most likely use a store procedure and return a complex type.

Any help is appreciated.

Thanks
Bob

Chart (obsolete as of Q1 2013)

answered on 21 Dec 2012

5 answers

294 views

Obtain value from an Editor while inside _ValueChanged

Hello.

I have a RadGridView with multiple date columns. When the user selects a date (using built-in editor) in any column, I want to save it in the database. If I use the RadGridView1_CellValueChanged event, I can get the new value using

radGridView1.CurrentRow.Cells[radGridView1.CurrentColumn.Name].Value.ToString()

but the drawback is that the user must click outside the cell to trigger the event. So I elected to use RadGridView1_ValueChanged instead, but then, the value doesn't seem to be written in the Gridview's cell at the time the event triggers so the line doesn't work as it always returns the old value.

How can I get the new user value from within RadGridView1_ValueChanged? Please consider that I also have spinner-type editors in the grid that will trigger the same way (and I want them to), so a code sample with multiple editor types on multiple columns would be of great help too.

Thanks alot.

GridView

answered on 21 Dec 2012

2 answers

124 views

Win 8 Theme

Hello,

is there a Win 8 Theme available for the Windows Forms RibbonBar?

General Discussions

answered on 21 Dec 2012

1 answer

189 views

When is the databinding process complete

Hi

I have simple scenario in which a RadDropDownList is populated from a small table in a database. After it has been populated if needed I need to select the Item or index or display value programmatically.
Also there is no problem with diplaying the items the items and the selection process works fine, items are diplayed in order.

I have tried to set all the fields that I can with respect to the databinding
here is the windows autogen code for the form where the dropdown resides

//

// MachineTypeDropDownList

//

this.MachineTypeDropDownList.AutoCompleteDisplayMember = "M_Type";

this.MachineTypeDropDownList.AutoCompleteValueMember = "MachineID";

this.MachineTypeDropDownList.DataBindings.Add(new System.Windows.Forms.Binding("SelectedIndex", this.machineDataBindingSource, "MachineID", true));

this.MachineTypeDropDownList.DataBindings.Add(new System.Windows.Forms.Binding("SelectedItem", this.machineDataBindingSource, "M_Name", true));

this.MachineTypeDropDownList.DataBindings.Add(new System.Windows.Forms.Binding("SelectedValue", this.machineDataBindingSource, "MachineID", true));

this.MachineTypeDropDownList.DataBindings.Add(new System.Windows.Forms.Binding("Text", this.machineDataBindingSource, "M_Name", true));

this.MachineTypeDropDownList.DataSource = this.machineDataBindingSource;

this.MachineTypeDropDownList.DisplayMember = "M_Type";

this.MachineTypeDropDownList.Location = new System.Drawing.Point(182, 52);

this.MachineTypeDropDownList.Name = "MachineTypeDropDownList";

this.MachineTypeDropDownList.Size = new System.Drawing.Size(136, 20);

this.MachineTypeDropDownList.TabIndex = 0;

this.MachineTypeDropDownList.Text = "System.Data.DataViewManagerListItemTypeDescriptor";

this.MachineTypeDropDownList.ValueMember = "MachineID";

this.MachineTypeDropDownList.DataBindingComplete += new Telerik.WinControls.UI.ListBindingCompleteEventHandler(this.MachineTypeDropDownList_DataBindingComplete);

this.MachineTypeDropDownList.Initialized += new System.EventHandler(this.MachineTypeDropDownList_Initialized);

In the form constructor InitializeComponent() is called after that I try to set the value of selected item of dropdown.
at this point Items count is still 0

this

.MachineTypeDropDownList.DropDownListElement.Items.Count

or 

this.MachineTypeDropDownList.Items.Count

i have tried to use the lisener for databound compeleted but items are still 0

private void MachineTypeDropDownList_DataBindingComplete(object sender, Telerik.WinControls.UI.ListBindingCompleteEventArgs e)

{

System.Diagnostics.Debug.WriteLine("this.MachineTypeDropDownList.DropDownListElement.Items --------------------------------" + this.MachineTypeDropDownList.DropDownListElement.Items.Count);

System.Diagnostics.Debug.WriteLine("this.MachineTypeDropDownList.Items --------------------------------" + this.MachineTypeDropDownList.Items.Count);

}

I get the same result after when i try

private void MachineTypeDropDownList_Initialized(object sender, EventArgs e){}

My question is at what point , or what event signals that the binding process is complete and further manipulation of the dropdownlist can comence?
Why is it that by the end of the form contructor code, the binding has not happened yet.

Thank you very much for any pointers to understand the telerik framework better
Ervis

DropDownList

answered on 21 Dec 2012