Questions on UI for WinForms Forum

2 answers

289 views

Hello, I am having an issue rendering RadControls For WInforms in the VS2008 IDE, seems when I drop any controls on a form they do not render on the page so that can click resize move around etc. I see all controls represented at the bottom of the form as if they were objects that are not visually represented such as DataBindingDatasources controls. I have uninstalled the Controls and re-installed but this has not solved the issue. (See attached Screen shot)

Visual Studio 2008 Pro Sp1
Using Microsoft.Net v2.0.50727 (with 3, 3.5 framework)
Windows Server 2003 sp2
WinForms_2011_3_11_1116

Thank You

General Discussions

answered on 20 Dec 2011

1 answer

113 views

Checkbox Event Quection

Hello Guys,

        private void radGridViewTakeSomeData_CellValueChanged(object sender, GridViewCellEventArgs e)
        {
            bool isChecked = (bool)e.Row.Cells[4].Value;
          if (isChecked == true)
            {
                            //Do something....
            }
        }

When I check GridViewCheckBoxColumn , the event acts the moment I click somewhere else in the grid. Should I change the event I'm using or is any "End Edit Mode" property in order to act immediately after I tick the Checkbox??

Thanks in advance!!

Buttons, RadioButton, CheckBox, etc

answered on 20 Dec 2011

4 answers

178 views

2011 Q1 Custom Sorting

Dear,

I would like to customize sorting with the treeview.

For instance I bound treeview to Person class entity list.

Then I would like to sort by firstname or lastname or age.

I tried SortDescriptors without success.

Thanks

Marc

Treeview

answered on 20 Dec 2011

1 answer

155 views

Cancel Item Check

Hello

I am setting a flag that is evaluated in ItemCheckedChanging. At times I need to stop an item from being checked. I have tried e.Cancel but it does not seem to work. In addition I looked for a property that contained previous checked state property but did not find anything.

I would like to be able to keep an item from being checked on a per item base.

Any suggestions?

Thank You

CheckedListBox

answered on 20 Dec 2011

1 answer

289 views

Databinding and radDateTimePicker

Hi

I have a problem with the ValueChanged event. It does not fire when i populate the record, but when the control is shown.
This is because the control is binded to the object. So I really dont know if the change is done by the user or bye the binding it self.
Is there a way to check if the value is set by the object binding or by the user?

Regards
Svein Thomas

Calendar, DateTimePicker, TimePicker and Clock

answered on 19 Dec 2011

2 answers

91 views

Binding two grids

I have 2 grids that I bind to when selecting a vendor from the drop down and click the search button(griderror.jpg shows before I click search). Before they get their data I add a command column to each grid, works with no problems. When I click the search button they both get their data with no problems and everything looks good(GridError2.jpg shows that the data properly populated). When I click the button in the command column of the first grid it does exactly what it is suppose to. If I click the command column in the 2nd grid it errors out with the original - Object reference is not set to an instance of an object. If I do not load the first grid, but just the 2nd grid it does not error out.

Private Sub rgvDocumentsPO_CommandCellClick(sender As Object, e As System.EventArgs) Handles rgvDocumentsPO.CommandCellClick

Dim VendorID As Integer = ddlDocumentsVendor.SelectedValue

Dim documentid As Integer = rgvDocumentsPO.CurrentRow.Cells("Document ID").Value

If DataLayer.UnconfirmDocument(documentid) = True Then

LoadDocuments(VendorID)

Else

RadMessageBox.Show("You can not unconfirm this document.")

End If

End Sub

Private Sub rgvDocumentsDrawings_CommandCellClick(sender As Object, e As System.EventArgs) Handles rgvDocumentsDrawings.CommandCellClick

Dim VendorID As Integer = ddlDocumentsVendor.SelectedValue

'It errors out on this next line, but not the same line in the above Sub

Dim documentid As Integer = rgvDocumentsDrawings.CurrentRow.Cells("Document ID").Value

If DataLayer.UnconfirmDocument(documentid) = True Then

LoadDocuments(VendorID)

Else

RadMessageBox.Show("You can not unconfirm this document.")

End If

End Sub

This is the function that loads the grids

Public Sub LoadDocuments(ByVal VendorID As Integer)

Try

Dim CommandColumn As New GridViewCommandColumn

CommandColumn.Name = "Unconfirm"

CommandColumn.HeaderText = ""

CommandColumn.DefaultText = "Unconfirm"

CommandColumn.UseDefaultText = True

CommandColumn.TextAlignment = ContentAlignment.MiddleCenter

If rgvDocumentsDrawings.RowCount = 0 Then

rgvDocumentsDrawings.Columns.Add(CommandColumn)

End If

If rgvDocumentsPO.RowCount = 0 Then

rgvDocumentsPO.Columns.Add(CommandColumn)

End If

Catch ex As Exception

End Try

rgvDocumentsPO.DataSource = DataLayer.GetActiveDocumentsByDocTypeAndVendor(2, VendorID)

rgvDocumentsDrawings.DataSource = DataLayer.GetActiveDocumentsByDocTypeAndVendor(3, VendorID)

rgvDocumentsPO.Columns("Document ID").IsVisible = False

rgvDocumentsDrawings.Columns("Document ID").IsVisible = False

rgvDocumentsPO.Columns("Unconfirm").Width = 100

rgvDocumentsDrawings.Columns("Unconfirm").Width = 100

rgvDocumentsPO.BestFitColumns()

rgvDocumentsDrawings.BestFitColumns()

End Sub

Any ideas on why this might be firing an error?

Thanks,
Chuck

GridView

answered on 19 Dec 2011

2 answers

239 views

WinForms the right solution for simple frontend (how include radcontrols)

Good day to all

I have an Public Area Dispaly System that usually pulls data from an access database. Now I need to make a new database which of course needs a new front-end. I know sql and tables quite well but am have never greatly worked with front-ends in access.

So since I know radtools for asp.net ajax I was wondering if it could make sense to programm the front-end with winforms.

Having never worked with WinForms it took me a good 2 hours yesterday to come figure out simple stuff.

I made a simple application with a RadMenu and when an menu item is clicked a new form gets shown. I published it to my server to check what happens if I try to install it on my windows tablet at home
- I did not have SQL Express 3.5 which was installed fast and automatically
- I got an error about TelerikContorls needed in GAC

So here come a bunch of questions

- Would it be simple to keep the whole thing in access (its not a very complicated database. Imagine a simple address database with a second table for countries)
- If WinForms would be an alertnative. Whats the best DB to be used to get the simplest installer process, user requirements if nothing is installed
- Can I use TelerikRad Tools for an application that I give away. Can I kind of embed the radControls (in web it would be a simple matter of bin folder)

Sorry for these very very basic questions.

Markus

General Discussions

answered on 19 Dec 2011

1 answer

108 views

PDF View

Hello, i am not sure where to put this topic but here it goes.
in one of your recent videos i saw something about a beta feature of pedf viewing in winforms.
I wonder if is it possible in winforms.
I know you have that tool for silverlight, but if there is anyway i can make it in winforms i would apreciate your help as i urgently need it in my application.
Best regards,

Rui SIlva

General Discussions

answered on 19 Dec 2011

1 answer

55 views

Telerik application embedded in other application

We have an application which uses a lot of Telerik Controls, everything works fine when we run the application stand-alone.

But one of the featuers is to run the application inside a GIS (Geographic Information Systems) app and interact.

But some of the telerik controls does not work inside theese programs (Mapinfo & ArcGIS) sometimes, they are not shown. Sometimes they are shown with a white box and a red cross. And sometimes our application crash when a telerik controls i activated.

Is there any knowledge about this issue?

General Discussions

answered on 19 Dec 2011

1 answer

85 views

RadChart renders as large red X

I have a RadChart and have used the documentation here :http://www.telerik.com/help/winforms/chart-building-radcharts-creating-radchart-programmatically-more-complex-example.html to create what I need. However, the RadChart does not display the data, leaving only a large red X in its place. This is the constructor for my form:

public ReportPreview(CalculationResults results)

{

InitializeComponent();

ReportChart.ChartTitle.TextBlock.Text = @"Report";

ReportChart.Series.Clear();

var chartSeriesA = new ChartSeries {Type = ChartSeriesType.Bezier, Name = @"Elevation"};

chartSeriesA.Appearance.LineSeriesAppearance.Color = Color.DarkBlue;

chartSeriesA.Appearance.PointMark.Dimensions.Width = 5;

chartSeriesA.Appearance.PointMark.Dimensions.Height = 5;

chartSeriesA.Appearance.PointMark.FillStyle.MainColor = Color.Black;

chartSeriesA.Appearance.PointMark.Visible = true;

var chartSeriesB = new ChartSeries {Type = ChartSeriesType.Bezier, Name = @"Predicted Elevation"};

chartSeriesB.Appearance.LineSeriesAppearance.Color = Color.DarkBlue;

chartSeriesB.Appearance.PointMark.Dimensions.Width = 5;

chartSeriesB.Appearance.PointMark.Dimensions.Height = 5;

chartSeriesB.Appearance.PointMark.FillStyle.MainColor = Color.Black;

chartSeriesB.Appearance.PointMark.Visible = true;

for (int i = 0; i < results.CurveFittingDataList.Count; i++)

{

chartSeriesA.AddItem(new ChartSeriesItem((double)results.CurveFittingDataList[i].AngularLoc, (double)results.CurveFittingDataList[i].Elevation));

chartSeriesB.AddItem(new ChartSeriesItem((double)results.CurveFittingDataList[i].AngularLoc, (double)results.CurveFittingDataList[i].PredictedElevation));

}

ReportChart.Series.Add(chartSeriesA);

ReportChart.Series.Add(chartSeriesB);

ReportChart.PlotArea.XAxis.AxisLabel.TextBlock.Text = @"Location Angle";

ReportChart.PlotArea.YAxis.AxisLabel.TextBlock.Text = @"Elevation";

ReportChart.Update();

}

No exception is thrown, no errors and the data is constructed properly. I have no idea on what to do next.

Chart (obsolete as of Q1 2013)