Questions on UI for WinForms Forum

1 answer

128 views

Using the latest MaskedEdit control I am attempting to bind the control to a BindingSource using a List of a CustomObjects, similar to...

List<Agency> agencies = GetAgencies();
agencyBindingSource.DataSource = agencies;

Within the Agency object there is a propery called ZipCode, which I am feeding to the MaskedEdit Value propery via DataBinding

this.zipCodeMasked.DataBindings.Add(new System.Windows.Forms.Binding("Value", this.agencyBindingSource, "ZipCode", true, System.Windows.Forms.DataSourceUpdateMode.OnPropertyChanged));

I also have a navigation control on the form that allows me to move through out the list and rebinds the controls to the Current object on the list. The strange behavior occurs when moving from one object that has a zipcode to another object that doesn't. When the first object has a ZipCode it appears within the control, however when moving to the next item that doesn't have a ZipCode, the control does not clear. Instead the next item appears to have the same ZipCode as the previous item.

I have use the following rework around...

var

agencyValues = (Agency)agencyBindingSource.Current;

if (agencyValues != null && !agencyValues.Zip.IsNotNullOrEmpty())

{

zipCodeMasked.Value =

null;

}

MaskedEditBox

answered on 20 Mar 2009

3 answers

59 views

GridView columns lose size when restored from minmized state

I have a RadGridView that starts up with the columns autosized and filled with data when the form loads. If I minimize the form, then restore it, the columns are all ~40 pixels wide and squished to the left.

Expected behavior: the columns would still be the size they were when I clicked minimize.

GridView

answered on 19 Mar 2009

0 answers

94 views

To the Telerik team

I have been noticing that on your RadForm there is a problem with how you get your GetDCEx. To keep it short I'll give you a short piece of code that can help you.

if

(msg.Msg != (int)WindowMessages.WM_NCPAINT)

{

return GetWindowDC(msg.HWnd);

}

int flags = (int)(DCX.DCX_CACHE | DCX.DCX_CLIPSIBLINGS

|

DCX.DCX_WINDOW );

IntPtr zero = IntPtr.Zero;

if (msg.WParam.ToInt32() != 1)

{

flags |= (

int)DCX.DCX_INTERSECTRGN;

zero = msg.WParam;

}

return GetDCEx(msg.HWnd, zero, flags);

Form

asked on 19 Mar 2009

2 answers

117 views

Performance times for data-load

Hi,

I'm using RadGridView for many applications here, we are using this mostly for reporting and it works very good!

But i'm not satifisfed by the performance of the data-load. (I'm using RadControls, Q3 2008 SP1)

I'm loading the grid (with default properties) from a DataTable and these are the loading times for a grid with 12 columns:

37 rows - 843 ms
173 rows - 906 ms
319 rows - 1 138 ms

Loading with 5 columns:

35 rows - 423 ms
173 rows - 468 ms
319 rows - 530 ms

Is this to be expected ? Can I set some properties to increase the performance for this ? Is there some kind of 'EnableTurboLoad' property available ? :-)

GridView

answered on 19 Mar 2009

1 answer

117 views

Vertical Scroll Bars

I have a grid that has the VerticalScrollState set to AutoHide. Is there a way at runtime to determine if the vertical scrollbar is currently visible or not?

Thank you.

GridView

answered on 19 Mar 2009

1 answer

180 views

close "x" button question

I using the code in the tabstrip tutorial to put a close "x" button on tabs and it works but is
there any way to actually destroy the tabs instead of hiding or collapsing them?

This is the code from the tutorial...

    
             Private Function newButton() As RadButtonElement 
        
             Dim radB As New RadButtonElement() 
        
             radB.MaxSize = New Size(12, 12) 
        
             AddHandler radB.Click, AddressOf HideTab 
        
             radB.Font = New System.Drawing.Font("Verdana", 6, FontStyle.Regular, GraphicsUnit.Point, (DirectCast(0, Byte))) 
        
             radB.Text = "x" 
        
             radB.TextAlignment = ContentAlignment.MiddleRight 
        
             'Alignment defines where the button will be placed on the tab 
        
             radB.Alignment = ContentAlignment.TopRight 
        
             Return radB 
        
            End Function 
        
            Private Sub HideTab(ByVal sender As Object, ByVal e As EventArgs) 
        
             Dim buttonElement As RadElement = (DirectCast(sender, RadElement)) 
        
             buttonElement.Parent.Visibility = ElementVisibility.Collapsed 
        
            End Sub

Tabstrip (obsolete as of Q2 2010)

answered on 19 Mar 2009

1 answer

70 views

Display issues with RadSplitButtonElement Q3 2008

I am using the RadSplitButtonElement in my Ribbonbar on my form.
I am adding the RadSplitButtonElement dynamically in code.

I have 2 of them , both are suffering the same issues.
First - No matter what the text alignment or imagealignment or display style or textimagerelation setting , I can not get either of them to display the text at all.

Second , no matter what the image alignment , I cannot get the Image top center or middle center. Top center and middle center always end up with the image top right or right center respectively. Top left and middle left both work fine but basically I am stuck
with my image either right or left.

Any help ?

RibbonBar

answered on 18 Mar 2009

1 answer

99 views

Drag Drop

Does the Q1 2009 Treeview support drag drop operations to other controls, without having to implement Windows drag drop methods?

Treeview

answered on 18 Mar 2009

9 answers

299 views

Resize The Grid Header For Session

Hi There,

I working on telerik. I want to maintain the grid header resized from client for that session. For that i provide the grid header resizing facility from client side. For that i used the coding:

    
             using System; 
        
            using System.Collections; 
        
            using System.IO; 
        
            using System.Web.UI; 
        
            using System.Web.UI.WebControls; 
        
            using Telerik.Web.UI; 
        
            namespace WebApplication1 
        
            { 
        
             public class GridSettingsPersister 
        
            { 
        
             private RadGrid gridInstance; 
        
             public GridSettingsPersister( RadGrid gridInstance ) 
        
             { 
        
              this.gridInstance = gridInstance; 
        
             } 
        
             //this method should be called on Render 
        
             public string SaveSettings() 
        
             { 
        
              object[] gridSettings = new object[4]; 
        
              //Save groupBy 
        
              GridGroupByExpressionCollection groupByExpressions = gridInstance.MasterTableView.GroupByExpressions; 
        
              object[] groupExpressions = new object[groupByExpressions.Count]; 
        
              int count = 0; 
        
              foreach( GridGroupByExpression expression in groupByExpressions ) 
        
              { 
        
               groupExpressions[count] = ((IStateManager)expression).SaveViewState(); 
        
               count++; 
        
              } 
        
              gridSettings[0] = groupExpressions; 
        
              //Save sort expressions 
        
              gridSettings[1] = ((IStateManager)gridInstance.MasterTableView.SortExpressions).SaveViewState(); 
        
              //Save columns order 
        
              int columnsLength = gridInstance.MasterTableView.Columns.Count + 
        
               gridInstance.MasterTableView.AutoGeneratedColumns.Length; 
        
              Pair [] columnOrder = new Pair[ columnsLength ]; 
        
              ArrayList allColumns = new ArrayList( columnsLength ); 
        
              allColumns.AddRange(gridInstance.MasterTableView.Columns ); 
        
              allColumns.AddRange(gridInstance.MasterTableView.AutoGeneratedColumns); 
        
              int i = 0; 
        
              foreach( GridColumn column in allColumns ) 
        
              { 
        
               Pair p = new Pair(); 
        
               p.First = column.OrderIndex; 
        
               p.Second = column.HeaderStyle.Width; 
        
               columnOrder[i] = p; 
        
               i++; 
        
              } 
        
              gridSettings[2] = columnOrder; 
        
             //Save filter expression 
        
              gridSettings[3] = (object)gridInstance.MasterTableView.FilterExpression; 
        
              LosFormatter formatter = new LosFormatter(); 
        
              StringWriter writer = new StringWriter(); 
        
              formatter.Serialize( writer, gridSettings ); 
        
              return writer.ToString(); 
        
             } 
        
             //this method should be called on PageInit 
        
             public void LoadSettings( string settings ) 
        
             { 
        
              LosFormatter formatter = new LosFormatter(); 
        
              StringReader reader = new StringReader( settings ); 
        
              object[] gridSettings = (object[])formatter.Deserialize( reader ); 
        
              //Load groupBy 
        
              GridGroupByExpressionCollection groupByExpressions = this.gridInstance.MasterTableView.GroupByExpressions; 
        
              groupByExpressions.Clear(); 
        
              object[] groupExpressionsState = (object[])gridSettings[0]; 
        
              int count = 0; 
        
              foreach( object obj in groupExpressionsState ) 
        
              { 
        
               GridGroupByExpression expression = new GridGroupByExpression(); 
        
               ((IStateManager)expression).LoadViewState( obj ); 
        
               groupByExpressions.Add( expression ); 
        
               count++; 
        
              } 
        
              //Load sort expressions 
        
              this.gridInstance.MasterTableView.SortExpressions.Clear(); 
        
              ((IStateManager)this.gridInstance.MasterTableView.SortExpressions).LoadViewState( gridSettings[1] ); 
        
              //Load columns order 
        
              int columnsLength = this.gridInstance.MasterTableView.Columns.Count + 
        
               this.gridInstance.MasterTableView.AutoGeneratedColumns.Length; 
        
              Pair [] columnOrder = (Pair[])gridSettings[2]; 
        
              if ( columnsLength == columnOrder.Length) 
        
              { 
        
               ArrayList allColumns = new ArrayList( columnsLength ); 
        
               allColumns.AddRange(this.gridInstance.MasterTableView.Columns ); 
        
               allColumns.AddRange(this.gridInstance.MasterTableView.AutoGeneratedColumns); 
        
               int i = 0; 
        
               foreach( GridColumn column in allColumns ) 
        
               { 
        
                column.OrderIndex = (int)columnOrder[i].First; 
        
                column.HeaderStyle.Width = (Unit)columnOrder[i].Second; 
        
                i++; 
        
               } 
        
              } 
        
              //Load filter expression 
        
              this.gridInstance.MasterTableView.FilterExpression = (string)gridSettings[3]; 
        
             } 
        
            }

By using this coding i am able to maintain the grid resizing for the session. But the problem i am facing is, i have provide facility in my grid that, when i will double click on any of the row in the grid it will move to edit page, And when i will come back to this page grid header use to come its original size. It's not maintaining the session. I just wanna the grid should maintain the header resized on double click also. Can anybody tell me the way to maintain the session on grid double click also.

Regards:
Vimal Kumar Srivastava
Madhepura, Bihar
Email Id: vimaltech04@gmail.com

GridView

answered on 18 Mar 2009

3 answers

343 views

Grid header context menu

Hi,

Is it possible to custom the context menu on grid header?

In particular, I want to add a menu item for grouping my grid on one of the columns. That is the only one column my users are likely to group the grid, so I don't want to show the whole group panel.

I may want to add some anther menu items too.

Thanks.

GridView

answered on 18 Mar 2009