Questions on UI for WinForms Forum

1 answer

96 views

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

262 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

116 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

178 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

1 answer

146 views

Order of Events for Cell Formating

Hi There

I'm having some trouble with the order of events for the Cell Format

We do some conditional cell formatting based on values returned from a database, such as what days to block - holidays etc
I managed to get it to work fine the first time round

The issue arises on the following Navigator events

NavigateBackwardsClick
NavigateForwadsClick

as the following event fires before the Navigate event

Scheduler.CellFormating

This seems quite strange, I would have thought that they would be reversed.

How can I call a refresh of the data method and which event should it go in

exceptionTimes = _service.GetSchedulerExceptionTimesByDateRange(RangeStartDate, RangeEndDate)

As putting the values in the Navigate events makes the cellformating event use the previous
range of exception times for the previous date range as defined before the navigate event.

Below is some example code

Private Sub snMain_NavigateBackwardsClick(sender As Object, e As EventArgs) Handles snMainNav.NavigateBackwardsClick
 
    RangeStartDate = rsScheduler.ActiveView.StartDate.AddDays(-1)
    RangeEndDate = rsScheduler.ActiveView.EndDate.AddDays(1)
 
    exceptionTimes = GetSchedulerExceptionTimesByDateRange(, RangeStartDate, RangeEndDate)
    GetAppointmentsByDateRange()
 
 End Sub
 
Private Sub rsScheduler_CellFormatting(sender As Object, e As SchedulerCellEventArgs) Handles rsScheduler.CellFormatting
    ' Other Code 
    For Each Exception In exceptionTimes
        'Block etc
 
    Next
 
End Sub

Scheduler and Reminder

answered on 21 Dec 2012

1 answer

926 views

Grid auto-resize to form resize

I would like for my grid to autosize according to the form size. When the form is resized, I would like the grid to expand. Is there a setting for this anywhere?

GridView

answered on 21 Dec 2012

3 answers

379 views

Custom style in some columns

Hi,

How to apply (by c# code) custom style (fore color, back color, font etc..) to only specific column, so style will affect all data in that column? I also want change style for individual column header cell and summary cell.
I'm only interested in the change of these properties in some of the columns, not all.

GridView

answered on 21 Dec 2012

4 answers

159 views

Click event

How can I give the user the ability to click on the popup alert and perform some action? I do not see a CLICK event on the popup object.

DesktopAlert

answered on 21 Dec 2012

1 answer

92 views

Context Menu on grid view

Context menu is expanding slowing on any usercontrol and rad gridview control. Also on 3rd Party control like Stockchart. It takes approx 2 seconds to pop-up.

GridView

answered on 21 Dec 2012

2 answers

123 views

Custom

Hello,

Edit: Sorry for topic name. Can't update it after posting.

I have RadMultiColumnComboBox in GridView.
I replace editor for that column like that:

private void GridView_EditorRequired(object sender, EditorRequiredEventArgs e)

{

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

{

PersonChecker newEditor = new PersonChecker();

e.Editor = newEditor;

}

and this is my custom class:

public class PersonChecker : BaseInputEditor

{

public override object Value

{

get

{

String all = "";

RadMultiColumnComboBoxElement editor = ((RadMultiColumnComboBoxElement)this.EditorElement);

foreach (GridViewRowInfo gvri in editor.Rows)

{

if (Convert.ToBoolean(gvri.Cells[0].Value) == true)

{

if (all != "")

all += "; ";

all += Convert.ToString(gvri.Cells[1].Value);

}

return all;

}

set

{

Console.WriteLine("to do");

}

protected override RadElement CreateEditorElement()

{

RadMultiColumnComboBoxElement editor = new RadMultiColumnComboBoxElement();

editor.EditorControl.AutoGenerateColumns = false;

editor.Columns.Clear();

GridViewCheckBoxColumn check = new GridViewCheckBoxColumn();

check.HeaderText = "";

check.Name = "Check";

check.MinWidth = 40;

check.MaxWidth = check.MinWidth;

check.ReadOnly = false;

editor.Columns.Add(check);

GridViewTextBoxColumn username = new GridViewTextBoxColumn();

username.HeaderText = "Username";

username.Name = "Username";

username.MinWidth = 200;

editor.Columns.Add(username);

editor.Rows.Clear();

editor.Rows.Add(new Object[] { false, "Person 1" });

editor.Rows.Add(new Object[] { false, "Person 2" });

editor.Rows.Add(new Object[] { false, "Person 3" });

//foreach (Person person in FormMain._persons)

//{

// editor.Rows.Add(

// new Object[] { false, person.SP_Username }

// );

//}

editor.EditorControl.ShowRowHeaderColumn = false;

editor.AutoSizeDropDownToBestFit = true;

editor.PopupClosing -= Editor_PopupClosing;

editor.PopupClosing += Editor_PopupClosing;

editor.EditorControl.CellClick -= EditorControl_CellClick;

editor.EditorControl.CellClick += EditorControl_CellClick;

return editor;

}

private void EditorControl_CellClick(object sender, GridViewCellEventArgs e)

{

if (e.ColumnIndex == 0 && e.RowIndex > -1)

{

e.Row.Cells[0].Value = !Convert.ToBoolean(e.Row.Cells[0].Value);

}

private void Editor_PopupClosing(object sender, RadPopupClosingEventArgs args)

{

if (args.CloseReason == RadPopupCloseReason.Mouse)

{

args.Cancel = true;

}

public override void BeginEdit()

{

base.BeginEdit();

this.EditorElement.Focus();

}

public override bool EndEdit()

{

return base.EndEdit();

}

public override Type DataType

{

get { return typeof(string); }

}

So basically when user edit cell, another grid (custom editor) will show and user can check few person. After editing value in that cell will be set like Person 1; Person 2; Person 3.

This all work just fine but i have problem with text in that cell when user is in edit mode.
After entering edit mode cell text automatically change to "False".
When user check some rows cell text also change according to checked state "False" or "True".

How to avoid that text changing?
I want see my current string (depend what was checked) "Person 1; Person 2; Person 3" in grid cell also in edit mode so will be always updated information.
I another words, how to control text displayed in cell when user is in edit mode?

GridView

answered on 21 Dec 2012