Questions on UI for WinForms Forum

3 answers

521 views

Hi there,

I am currently developing an MDI application exploiting your Raddock Control.

As I am using forms as tabbed windows, I would like my application not to create a new tab (a second one), if the form is already open.

Currently I am using the following workaround and nonetheless I don’t like very much this way J

private void AddTabbedForm(BaseForm form)

{

    if (this.radDock1.DockWindows.DocumentWindows.Where(w => w.Text == form.Text).Count() > 0)

    {

        this.radDock1.ActivateWindow(this.radDock1.DockWindows.DocumentWindows.Where(w => w.Text == form.Text).First());

        return;

    }

      form.MdiParent = this;

    form.Show();

}

Any hint to have it implemented in a more elegant way?

Thank you very much
Davide

Dock

answered on 26 Apr 2012

1 answer

207 views

Solution: Natural Sort on column

A few threads have been posted over the years to ask about natural sorting, which is clicking a column header to go Ascending, Descending, then back to the default unsorted mode on the third click. I looked around for a tri-state or three-state toggle and didn't find any info. Very helpful but incomplete info is found here and here, so I thought I'd provide C# code to help anyone else looking to do this. Some threads refer to MasterGridViewTemplate.AllowNaturalSort but that property no longer exists. My code is adapted from the second forum posting referenced. It looks like the library has changed since Sean wrote his code.

Telerik.WinControls.Data.SortDescriptor.Direction is of type System.ComponentModel.ListDirection, and that enum only has two values. So the Boolean _sorted is used - if the grid is sorted in ascending or descending order, then use the sort order, but if we click past descending order, set _sorted to false (natural sort!) and clear the SortDescriptors.

Of course clearing SortDescriptors means this only works with single column sorting. Maybe someone will follow-up here with a solution that works with multiple columns.

HTH

using System.ComponentModel;

bool _sorted = false;

ListSortDirection _previousGridColumnSortDirection;

private void radGridView1_SortChanging(object sender, GridViewCollectionChangingEventArgs e)

{

try

{

Telerik.WinControls.Data.SortDescriptor sortField;

// Only proceed if we are changing an existing sorting (not starting a new one)

// Make sure we have an item

if (e.NewItems != null && e.NewItems.Count > 0)

{

sortField = (Telerik.WinControls.Data.SortDescriptor)e.NewItems[0];

if (e.Action == Telerik.WinControls.Data.NotifyCollectionChangedAction.ItemChanging)

{

// If the current SortOrder is Ascending, and the previous SortOrder

// was Descending, then clear the sorting.

if (_sorted)

{

if (sortField.Direction == ListSortDirection.Ascending &&

_previousGridColumnSortDirection == ListSortDirection.Descending)

{

_sorted = false;

radGridView1.MasterGridViewTemplate.SortDescriptors.Clear();

}

//Save the SortOrder for the next iteration

_previousGridColumnSortDirection = sortField.Direction;

}

else

{

_sorted = true;

_previousGridColumnSortDirection = sortField.Direction;

}

if (e.Action == Telerik.WinControls.Data.NotifyCollectionChangedAction.Add)

{

_sorted = true;

_previousGridColumnSortDirection = sortField.Direction;

}

catch

{

}

GridView

answered on 26 Apr 2012

1 answer

97 views

grouped columns with wraped text

Hello,

I have Winform RadGridView with grouped columns header. I will wrap the long text.

radGridView1.AutoSizeRows = true;

radGridView1.Columns["column1"].WrapText = true;

radGridView1.Columns["column1"].Multiline = true;

Error after view definition, See picture in attach.
Without grouped columns header works well.
Any suggestions?

Regards,
Elek

GridView

answered on 26 Apr 2012

5 answers

1.0K+ views

How to add button in every node?

Please see the picture in attachment.

Can I add "Add Node" button in every node?
Rather than, user choose >> right click >> click New >> key in.

Is possible?
Thank You.

Treeview

answered on 26 Apr 2012

3 answers

259 views

Custom GridDataCellElement for RadGridView. Adding logic to CreateChildElements

Hey Guys

I have a problem where i wish to add logic into the CreateChildElements method which, based on the value of a given cell in the row will display different controls.

When CreateChildElements is called, the GridViewColumn and GridRowElement (which have been set in the contructor) are Null, as if they are not in the same context.

This is what i currently have (Please notice the CreateChildElements Method)

#region GridDataCellElement

public class GridDataCustomCellElement : GridDataCellElement

{

#region Locals

private RadImageButtonElement radButtonElementViewOrder;

private RadImageButtonElement radButtonElementNewOrder;

public GridViewColumn thisColumn;

public GridRowElement thisRow;

#endregion

#region Constructors

public GridDataCustomCellElement(GridViewColumn col, GridRowElement row) : base(col, row) { thisColumn = col; thisRow = row;}

#endregion

#region Events

void radButtonElementNewOrder_Click(object sender, EventArgs e)

{

Main newOrder = new Main(GetFolderPath(thisRow.GridControl.CurrentRow.Cells[2].Value.ToString()) + "\\" + thisRow.GridControl.CurrentRow.Cells[0].Value.ToString());

newOrder.MyParentForm = (SalesOrderingClient.Home)thisRow.GridControl.FindForm();

newOrder.IsCopyOrder = true;

newOrder.ShowDialog();

}

void radButtonElementViewOrder_Click(object sender, EventArgs e)

{

// Build order object

SalesOrderingObjects.Order objOrder = SalesOrderingObjects.Order.LoadOrder(GetFolderPath(thisRow.GridControl.CurrentRow.Cells[2].Value.ToString()) +

"\\" + thisRow.GridControl.CurrentRow.Cells[0].Value.ToString());

// Build session object

Session s = new Session(objOrder);

// Display Order

Order o = new Order(s);

o.ShowDialog();

}

#endregion

#region Overrides

/// <summary>

/// Create new controls and add them to cell

/// </summary>

protected override void CreateChildElements()

{

// Set up controls and add them to this cell

Home h = new Home();

radButtonElementViewOrder = new RadImageButtonElement();

radButtonElementViewOrder.ButtonFillElement.BackColor = Color.Transparent;

radButtonElementViewOrder.ButtonFillElement.BackColor2 = Color.Transparent;

radButtonElementViewOrder.ImageAlignment = ContentAlignment.MiddleRight;

radButtonElementViewOrder.BorderElement.Width = 0;

radButtonElementViewOrder.Image = h.IconImageLIst.Images[1];

radButtonElementViewOrder.ToolTipText = "View Order";

this.Children.Add(radButtonElementViewOrder);

radButtonElementNewOrder = new RadImageButtonElement();

radButtonElementNewOrder.ButtonFillElement.BackColor = Color.Transparent;

radButtonElementNewOrder.ButtonFillElement.BackColor2 = Color.Transparent;

radButtonElementNewOrder.ImageAlignment = ContentAlignment.MiddleRight;

radButtonElementNewOrder.BorderElement.Width = 0;

radButtonElementNewOrder.Image = h.IconImageLIst.Images[0];

radButtonElementNewOrder.ToolTipText = "Copy Order";

this.Children.Add(radButtonElementNewOrder);

radButtonElementNewOrder.Click += new EventHandler(radButtonElementNewOrder_Click);

radButtonElementViewOrder.Click += new EventHandler(radButtonElementViewOrder_Click);

}

/// <summary>

/// Set size and position of controls in the cell

/// </summary>

/// <param name="finalSize"></param>

/// <returns></returns>

protected override SizeF ArrangeOverride(SizeF finalSize)

{

// If there are more than 1 controls in this cell

//if (this.Children.Count == 3)

//{

// Setup dimensions and position and modifiy controls

RectangleF btn1 = new RectangleF(20, 12, 36, 36);

RectangleF btn2 = new RectangleF(58, 12, 36, 36);

this.Children[0].Arrange(btn1);

this.Children[1].Arrange(btn2);

//}

return finalSize;

}

/// <summary>

/// Set the cells theme, if not done, cell does not inherit theme as it is custom

/// </summary>

protected override Type ThemeEffectiveType

{

get

{

return typeof(GridDataCellElement);

}

public override bool IsCompatible(GridViewColumn data, object context)

{

return data is RadLabelColumn && context is GridDataRowElement;

}

#endregion

#region Private Methods

/// <summary>

/// Get folder path based on XML status

/// </summary>

/// <param name="status"></param>

/// <returns></returns>

string GetFolderPath(string status)

{

string folder = string.Empty;

switch (status)

{

case "Saved":

folder = Common.SavedOrdersFolder;

break;

case "InProgress":

folder = Common.InProgressOrdersFolder;

break;

case "Sent":

folder = Common.SentOrdersFolder;

break;

case "Requested":

folder = Common.RequestedOrdersFolder;

break;

default:

folder = Common.UserDataBaseFolder;

break;

}

return folder;

}

#endregion

}

#endregion

This is what i would like to do:

protected override void CreateChildElements()

{

// Set up controls and add them to this cell

Home h = new Home();

switch(SOMETHING GOES HERE)

{

case ?:

radButtonElementViewOrder = new RadImageButtonElement();

radButtonElementViewOrder.ButtonFillElement.BackColor = Color.Transparent;

radButtonElementViewOrder.ButtonFillElement.BackColor2 = Color.Transparent;

radButtonElementViewOrder.ImageAlignment = ContentAlignment.MiddleRight;

radButtonElementViewOrder.BorderElement.Width = 0;

radButtonElementViewOrder.Image = h.IconImageLIst.Images[1];

radButtonElementViewOrder.ToolTipText = "View Order";

this.Children.Add(radButtonElementViewOrder);

radButtonElementNewOrder = new RadImageButtonElement();

radButtonElementNewOrder.ButtonFillElement.BackColor = Color.Transparent;

radButtonElementNewOrder.ButtonFillElement.BackColor2 = Color.Transparent;

radButtonElementNewOrder.ImageAlignment = ContentAlignment.MiddleRight;

radButtonElementNewOrder.BorderElement.Width = 0;

radButtonElementNewOrder.Image = h.IconImageLIst.Images[0];

radButtonElementNewOrder.ToolTipText = "Copy Order";

this.Children.Add(radButtonElementNewOrder);

radButtonElementNewOrder.Click += new EventHandler(radButtonElementNewOrder_Click);

radButtonElementViewOrder.Click += new EventHandler(radButtonElementViewOrder_Click);

break;

case ?:

// ADD SOME DIFFERENT CONTROLS

break;

}

Please tell me if this is possible, or if there is an alternative way of doing this?

Many Thanks
Tim

GridView

answered on 26 Apr 2012

5 answers

370 views

PropertyValueChanged Exception

Hi. I'm working with RadPropertyGrid for WinForms.
I have some problem with PropertyValueChanged Event

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

radPropertyGrid1.PropertyValueChanged += new PropertyGridItemValueChangedEventHandler(radPropertyGrid1_PropertyValueChanged);

string A = "";

int B = 0;

bool C = false;

RadPropertyStore store = new RadPropertyStore();

PropertyStoreItem itemA = new PropertyStoreItem(typeof(string), "A", A);

PropertyStoreItem itemB = new PropertyStoreItem(typeof(int), "B", B);

PropertyStoreItem itemC = new PropertyStoreItem(typeof(bool), "C", C);

store.Add(itemA);

store.Add(itemB);

store.Add(itemC);

radPropertyGrid1.SelectedObject = store;

}

void radPropertyGrid1_PropertyValueChanged(object sender,

PropertyGridItemValueChangedEventArgs e)

{

try

{

throw new NotImplementedException();

}

catch(Exception exc)

{

MessageBox.Show(exc.Message);

}

So, how can you see, In my project I need show MessageBox with some Exception. When I changed bool value (itemC) in propertyGrid, MessegeBox is shown once and it's ok, but when I changed string or int value PropertyValueChanged event began twice (second event began in line "MessageBox.Show(exc.Message); ")
Maybe you can explain me what I do wrong. Thanks

PropertyGrid

answered on 26 Apr 2012

5 answers

187 views

two stacked bar series for a single axis item

Hi,

i need to draw two stacked bar series for a single date. my exact requirement is like:

i have dates on X-axis and on Y-axis i have double values.

totally i have 5 serieses:

series1,series2,series3,series4,series5

i need to draw a stacked bar for series1,2,3 and one more stacked bar series for series 4,5 on stacked bar chart.

it looks some thing like below:
|          ---
|          |S 3 |
|          --- ---
|          | S2 || S5 |
|          --- ---
|          |S1 || S 4|
|------------------------------------------------------------------------------
              june5              june6

i am not able to paste any image that's why i have given rough sketch.hope u understand the requirement.

is this possible? if so please provide me some sample code.

Help is highly appreciated.

Regards,
kiran

Chart (obsolete as of Q1 2013)

answered on 26 Apr 2012

7 answers

195 views

MDA PInvoke Error

Hello
When I click on the cell of the GRID I got the following error from MDA

A call to PInvoke function 'Telerik.WinControls.GridView!Telerik.WinControls.UI.RadGridViewAccessibleObject::NotifyWinEvent' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.

I am using the latest Q1 2012 SP1, in NET4.0

Any ideas... I am completly blind in this one.

( I have already turn to x86 to compile)

GridView

answered on 25 Apr 2012

6 answers

186 views

RadListBox runtime creating...

Hi... im creating a RadListBox at runtime with a win app and it creates with the correct items but... I cant select any of them!!! =S... thats really weird and I've been trying many options... can you help me with that issue?

here's my code.

RadListBox

lista = new RadListBox();

for

(int j = 0; j < listaCuartoSel.Count; j++)

{

RadListBoxItem item = new RadListBoxItem();

item.Text = listaCuartoSel[j].Nombre;

string pathImagen = "ImagePath";

Image imagenCuarto = Image.FromFile(pathImagen);

item.Image = imagenCuarto;

item.Alignment =

ContentAlignment.TopLeft;

item.ImageAlignment =

ContentAlignment.MiddleRight;

item.TextImageRelation =

TextImageRelation.ImageBeforeText;

lista.Items.Add(item);

}

lista.Enabled =

true;

lista.Virtualized =

true;

lista.IsAccessible =

true;

lista.SelectedIndex = 0;

lista.Width = 300;

this

.Controls.Add(lista);

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 25 Apr 2012

6 answers

424 views

Excel Like Filtering

hi all

Is there a way to display the distinct values calculated after each column is filtered and I only want the value that still remain in the view?

GridView

answered on 25 Apr 2012