Questions on UI for WinForms Forum

1 answer

64 views

I had created a sample project using radwinforms
Then put rad ribbon bar in the main form.then created a tab and group in the ribbon bar.
Then i put an imagebuttonelement1 and set properties Image,ImageHoverd.
Then compiled and execute4d the application .Image is showing fine on the button but when mouse arrow hovered over the button, image not changing .What will i do to change image of button when mouse hovered ?

RibbonBar

answered on 01 Apr 2013

1 answer

302 views

Changing selectedindex from within selectedindexchanged event

When I am within a selectedindexchanged event of a listcontrol and I try to programmatically change the selectedindex value, the change does not take. The concept is that "new" is the first item in the list and when "new" is selected an actual new record is inserted into the listcontrol and I want to position the selection to the new item. The command does not error but the selectedindex does not change either. This is also the case if you try to change it from the debugger. Any suggestions on how to accomplish this?

ListView

answered on 01 Apr 2013

1 answer

83 views

How to invoke add new appointment menu

If i double clicked on radscheduler i will get add new appointment dialog.
I want to do the same when clicked on a button created by me. How?

Scheduler and Reminder

answered on 01 Apr 2013

2 answers

136 views

Preventing the Edit of Specific Nodes

I am trying to prevent the editing of a certain node with this event handler:

private void radTreeView_Editing(object sender, TreeNodeEditingEventArgs e)

{

if (e.Node.Text == "abc")

{

e.Node.CancelEdit();

}

It appears that I am missing something because the node text is still editable and this exception is thrown:

System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.WinControls.UI.RadTreeViewElement.BeginEdit()
   at Telerik.WinControls.UI.RadTreeViewElement.mouseUpTimer_Tick(Object sender, EventArgs e)
   at System.Windows.Forms.Timer.OnTick(EventArgs e)
   at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Any suggestions?

Treeview

answered on 29 Mar 2013

2 answers

272 views

Add page breaks in HTML to PDF export

I am using the RichTexBox to read HTML and export it as a PDF. However, I have multiple sources of HTML that each need to have their own page within the PDF file. I got the exporting to work but I can't get a page break to be inserted between each body of HTML.
What would be the best way to go about this?

Thanks!

RichTextBox (obsolete as of Q3 2014 SP1)

answered on 29 Mar 2013

3 answers

192 views

Inserting a Column from second data source

Hi,

Is it possible to insert a column that's not part of the main datasource of a pivot grid, kinda difficult to explain but what I want to do is:

1. Show a pivot grid with aggregate columns over a time period.
2. Insert a start position from another datasource.

If you look at the attached image, it might give a better clue as to what I want to do:

The Column in Red, Start Inventory, is the column I want to insert, this data comes from a second dataset, the key being stock item.

The Totals Column is just the sum of Purchases / Sales / Loss.

What would be cool would be to add a second column that would calculate the Start Inventory - Totals (not shown on image)

Hope this makes sense,

Cheers

Shaun.

Cheers

Shaun.

PivotGrid and PivotFieldList

answered on 29 Mar 2013

1 answer

77 views

Node changed IsChecked state itself after Scroll

I create tree with nodes like in example. When I use scroll on mouse for scrolling up and down Node18 state changed from checked to unchecked and back on GUI. When Nodes18 state is unchecked and I select any node, Node18 state changed to checked on GUI. This is easy to reproduce. I use 2013 Q1 SP1. This code was generated by VS automatically.

How do you suggest resolving this?

Code example:

private void InitializeComponent()

{

Telerik.WinControls.UI.RadTreeNode radTreeNode1 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode2 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode3 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode4 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode5 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode6 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode7 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode8 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode9 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode10 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode11 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode12 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode13 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode14 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode15 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode16 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode17 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode18 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode19 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode20 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode21 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode22 = new Telerik.WinControls.UI.RadTreeNode();

Telerik.WinControls.UI.RadTreeNode radTreeNode23 = new Telerik.WinControls.UI.RadTreeNode();

this.radTreeView1 = new Telerik.WinControls.UI.RadTreeView();

((System.ComponentModel.ISupportInitialize)(this.radTreeView1)).BeginInit();

this.SuspendLayout();

//

// radTreeView1

//

this

.radTreeView1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)

| System.Windows.Forms.AnchorStyles.Left)

| System.Windows.Forms.AnchorStyles.Right)));

this.radTreeView1.BackColor = System.Drawing.SystemColors.Control;

this.radTreeView1.Cursor = System.Windows.Forms.Cursors.Default;

this.radTreeView1.Font = new System.Drawing.Font("Segoe UI", 8.25F);

this.radTreeView1.ForeColor = System.Drawing.Color.Black;

this.radTreeView1.Location = new System.Drawing.Point(12, 12);

this.radTreeView1.Name = "radTreeView1";

radTreeNode1.Expanded = true;

radTreeNode1.Name = "Node1";

radTreeNode2.Name = "Node2";

radTreeNode2.Text = "Node2";

radTreeNode3.Name = "Node3";

radTreeNode3.Text = "Node3";

radTreeNode4.Name = "Node4";

radTreeNode4.Text = "Node4";

radTreeNode5.Name = "Node5";

radTreeNode5.Text = "Node5";

radTreeNode6.Name = "Node6";

radTreeNode6.Text = "Node6";

radTreeNode7.Name = "Node7";

radTreeNode7.Text = "Node7";

radTreeNode8.Name = "Node8";

radTreeNode8.Text = "Node8";

radTreeNode9.Name = "Node9";

radTreeNode9.Text = "Node9";

radTreeNode10.Name = "Node10";

radTreeNode10.Text = "Node10";

radTreeNode11.Name = "Node11";

radTreeNode11.Text = "Node11";

radTreeNode12.Name = "Node12";

radTreeNode12.Text = "Node12";

radTreeNode13.Name = "Node13";

radTreeNode13.Text = "Node13";

radTreeNode14.Name = "Node14";

radTreeNode14.Text = "Node14";

radTreeNode15.Name = "Node15";

radTreeNode15.Text = "Node15";

radTreeNode1.Nodes.AddRange(new Telerik.WinControls.UI.RadTreeNode[] {

radTreeNode2,

radTreeNode3,

radTreeNode4,

radTreeNode5,

radTreeNode6,

radTreeNode7,

radTreeNode8,

radTreeNode9,

radTreeNode10,

radTreeNode11,

radTreeNode12,

radTreeNode13,

radTreeNode14,

radTreeNode15});

radTreeNode1.Text = "Node1";

radTreeNode16.Expanded = true;

radTreeNode16.Name = "Node16";

radTreeNode17.CheckType = Telerik.WinControls.UI.CheckType.RadioButton;

radTreeNode17.Name = "Node17";

radTreeNode17.Text = "Node17";

radTreeNode18.CheckState = Telerik.WinControls.Enumerations.ToggleState.Indeterminate;

radTreeNode18.CheckType = Telerik.WinControls.UI.CheckType.RadioButton;

radTreeNode18.Expanded = true;

radTreeNode18.Name = "Node18";

radTreeNode19.CheckType = Telerik.WinControls.UI.CheckType.CheckBox;

radTreeNode19.Name = "Node19";

radTreeNode19.Text = "Node19";

radTreeNode20.CheckType = Telerik.WinControls.UI.CheckType.CheckBox;

radTreeNode20.Name = "Node20";

radTreeNode20.Text = "Node20";

radTreeNode21.CheckType = Telerik.WinControls.UI.CheckType.CheckBox;

radTreeNode21.Name = "Node21";

radTreeNode21.Text = "Node21";

radTreeNode22.CheckType = Telerik.WinControls.UI.CheckType.CheckBox;

radTreeNode22.Name = "Node22";

radTreeNode22.Text = "Node22";

radTreeNode23.CheckType = Telerik.WinControls.UI.CheckType.CheckBox;

radTreeNode23.Name = "Node23";

radTreeNode23.Text = "Node23";

radTreeNode18.Nodes.AddRange(new Telerik.WinControls.UI.RadTreeNode[] {

radTreeNode19,

radTreeNode20,

radTreeNode21,

radTreeNode22,

radTreeNode23});

radTreeNode18.Text = "Node18";

radTreeNode16.Nodes.AddRange(new Telerik.WinControls.UI.RadTreeNode[] {

radTreeNode17,

radTreeNode18});

radTreeNode16.Text = "Node16";

this.radTreeView1.Nodes.AddRange(new Telerik.WinControls.UI.RadTreeNode[] {

radTreeNode1,

radTreeNode16});

this.radTreeView1.RightToLeft = System.Windows.Forms.RightToLeft.No;

this.radTreeView1.Size = new System.Drawing.Size(260, 238);

this.radTreeView1.SpacingBetweenNodes = -1;

this.radTreeView1.TabIndex = 0;

this.radTreeView1.Text = "radTreeView1";

//

// Form1

//

this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);

this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;

this.ClientSize = new System.Drawing.Size(284, 262);

this.Controls.Add(this.radTreeView1);

this.Name = "Form1";

this.Text = "Form1";

((System.ComponentModel.ISupportInitialize)(this.radTreeView1)).EndInit();

this.ResumeLayout(false);

}

private Telerik.WinControls.UI.RadTreeView radTreeView1;

UPDATE : This causes for node18 because it set as
radTreeNode18.CheckState = Telerik.WinControls.Enumerations.ToggleState.Indeterminate;

Treeview

answered on 29 Mar 2013

1 answer

155 views

radgridview can't display summaryrowsbottom value

I use radgridview control to fill tablea and tableb datasource.
in frmA and frmB I use same mothod
set radgridview property->summaryrowsbottom->sum filedname
in frmA recordset count is 10 ->radgridview summary display ok (sql: select * from table a)
but in frmB recordset count is 300 ->radgridview summary can't display from the gridview bottom (sql:select * from tableb)

if frmB recordset count is 10 ->radgridview summary display ok (sql:select top 10 * from tableb)
how can i display summaryrowsbottom value in a lot of rows?
thanks!

2013.03.28

I use code

private RadGridView radGridView1;

private

GridViewSummaryItem  summaryItem1；

  

  private void LoadData()

{

	tbladapter.fillbydate(ds.tbla,begindate,enddate);

	
     summaryItem1 = new GridViewSummaryItem("Id", "Sum of Id: {0}", GridAggregateFunction.Sum);
     var summaryRow1 = new GridViewSummaryRowItem(new[] {summaryItem1});



       //if I add onece the radgridview can't display in 299 recordset

        radGridView1.SummaryRowsBottom.Add(summaryRow1);     

       //if I add two same method the radgridview can display summary ok 

       radGridView1.SummaryRowsBottom.Add(summaryRow1);     


}

GridView

answered on 29 Mar 2013

2 answers

201 views

Insert numbered list programmatically

How can a numbered (or bulleted) list be inserted into a rich text box programmatically?

RichTextBox (obsolete as of Q3 2014 SP1)

answered on 29 Mar 2013

4 answers

667 views

Group header and Summary Row

Hello,

I have a gridview which display workitemdata. The columns are "The client", "The service contract", "The Employee", "The Date", "Hours", "Description", "price hour" and "Value (price hour * hours). The client, service contract and employee are ID value not string.

I have made a three level grouping on Client, service contract and Employee.

I have added a summary row for displaying the total of Value by group and an Handler on GroupSummaryEvaluate for displaying an human readable string instead of ID.

But I'm stuck on these problems:

I want only to display the subtotal (the summaryRow) on the client group level (last level). The showParentGroupSummaries properties work for each level (true) or the first level (false).
The GroupSummaryEvaluate handler change the display string of my group header AND my summaryRow.
What are the options for formatting my summaryRow (like text alignment, font, ...)
The group sort my values on ID (column value) before grouping. Is there a way to sort on the readable string after the grouping. I could use a numeric enumeration based on my string instead of an ID for grouping. Just asking if there is a kick tip about this :-)

I join two picture (GroupSummaryEvaluate active/not active) and some code.

Imports System.Data.Objects

Imports Telerik.WinControls.UI

Imports Telerik.WinControls.Data

Public Class View_ValorisationTravail

Private _datactx As IconEntities

Public ReadOnly Property InnerDataContext As IconEntities

Get

Return _datactx

End Get

End Property

Private _dataquery As ObjectQuery(Of Travail)

Public Property DataQuery As ObjectQuery(Of Travail)

Get

Return _dataquery

End Get

Set(value As ObjectQuery(Of Travail))

If _dataquery Is Nothing AndAlso value IsNot Nothing Then

_dataquery = value

OnDataqueryChanged()

End If

If Not _dataquery.Equals(value) Then

_dataquery = value

OnDataqueryChanged()

End If

End Set

End Property

Private Sub View_ValorisationTravail_Load(sender As Object, e As System.EventArgs) Handles Me.Load

If Not Me.DesignMode Then

_datactx = New IconEntities(GetConnection())

'Temporaire en attendant les filtres

Me.DataQuery = GenerateDataQuery()

End If

IntitialiseGroupValorisationTravaux(Me.RadGridView1)

Dim summaryItem As New GridViewSummaryItem("Valeur", "{0:N2} CHF", GridAggregateFunction.Sum)

Dim summaryItemLabel As New GridViewSummaryItem("CHFparheure", "TOTAL", GridAggregateFunction.Sum)

Dim summaryRowItem As New GridViewSummaryRowItem()

summaryRowItem.Add(summaryItem)

summaryRowItem.Add(summaryItemLabel)

Me.RadGridView1.SummaryRowsBottom.Add(summaryRowItem)

Me.RadGridView1.MasterTemplate.ShowParentGroupSummaries = True

End Sub

Private Sub OnDataqueryChanged()

Me.RadGridView1.DataSource = DataQuery.Execute(MergeOption.OverwriteChanges).ToList

End Sub

''' <summary>

''' Generating an ObjectQuery for test purpose

''' </summary>

''' <returns></returns>

''' <remarks></remarks>

Private Function GenerateDataQuery() As ObjectQuery(Of Travail)

Dim query = From c In _datactx.Travail

Select c

Return query

End Function

Private GroupClientDescriptor As GroupDescriptor

Private GroupPrestationDescriptor As GroupDescriptor

Private GroupCollaborateurDescriptor As GroupDescriptor

''' <summary>

''' Build the group

''' </summary>

''' <param name="aGridView"></param>

''' <remarks></remarks>

Private Sub IntitialiseGroupValorisationTravaux(aGridView As RadGridView)

aGridView.EnableGrouping = True

aGridView.AutoExpandGroups = True

aGridView.GroupDescriptors.Clear()

Dim SortClientDescriptor As New SortDescriptor("Client", System.ComponentModel.ListSortDirection.Ascending)

GroupClientDescriptor = New GroupDescriptor()

GroupClientDescriptor.GroupNames.AddRange(New Telerik.WinControls.Data.SortDescriptor() {SortClientDescriptor})

Dim SortPrestationDescriptor As New SortDescriptor("Prestation", System.ComponentModel.ListSortDirection.Ascending)

GroupPrestationDescriptor = New GroupDescriptor()

GroupPrestationDescriptor.GroupNames.AddRange(New Telerik.WinControls.Data.SortDescriptor() {SortPrestationDescriptor})

Dim SortCollaborateurDescriptor As New SortDescriptor("Collaborateur", System.ComponentModel.ListSortDirection.Ascending)

GroupCollaborateurDescriptor = New GroupDescriptor()

GroupCollaborateurDescriptor.GroupNames.AddRange(New Telerik.WinControls.Data.SortDescriptor() {SortCollaborateurDescriptor})

aGridView.GroupDescriptors.AddRange(New

Telerik.WinControls.Data.GroupDescriptor() {GroupClientDescriptor, GroupPrestationDescriptor, GroupCollaborateurDescriptor})

End Sub

Private Sub Travaux_GroupSummaryEvaluate(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.GroupSummaryEvaluationEventArgs) Handles RadGridView1.GroupSummaryEvaluate

If e.Group.GroupDescriptor.Equals(GroupClientDescriptor) Then

If e.Group.ItemCount > 0 AndAlso e.Group.Item(0).DataBoundItem IsNot Nothing Then

e.FormatString = CType(e.Group.Item(0).DataBoundItem.Client, Client).Display

End If

ElseIf e.Group.GroupDescriptor.Equals(GroupPrestationDescriptor) Then

If e.Group.ItemCount > 0 AndAlso e.Group.Item(0).DataBoundItem IsNot Nothing Then

e.FormatString = CType(e.Group.Item(0).DataBoundItem.Prestation, Prestation).Display

End If

ElseIf e.Group.GroupDescriptor.Equals(GroupCollaborateurDescriptor) Then

If e.Group.ItemCount > 0 AndAlso e.Group.Item(0).DataBoundItem IsNot Nothing Then

e.FormatString = CType(e.Group.Item(0).DataBoundItem.ContratEngagement.Collaborateur, Collaborateur).DisplayName

End If

End Sub

End Class

GridView

answered on 29 Mar 2013