Questions on UI for WinForms Forum

1 answer

160 views

[Solved] how to validate data in unbound grid

How do I validate existing record in radgrid. if some one enter data into grid if he duplicate the data how do i validate it

GridView

answered on 02 Mar 2011

7 answers

261 views

Cell Group validation

I am creating a small application using the RadGridview for Silverlight which validates whether a group of cells in the same row summ to one. if they do not sum to on then validation for the row fails. I am attempting to set the focus to the first cell of the group which fails validation using the below code:

private void gvRiskMetrics_RowValidating(object sender, Telerik.Windows.Controls.GridViewRowValidatingEventArgs e)

{

RMSectorWeightEnt SectorWeightENT = e.Row.DataContext as RMSectorWeightEnt;

List<double?> GroupSums = checkGroupSums(SectorWeightENT);

int isum = 0;

foreach (double sum in GroupSums)

{

if (sum != 1)

{

GridViewCellValidationResult validationResult = new GridViewCellValidationResult();

validationResult.PropertyName = "Sums";

validationResult.ErrorMessage = "Sum must be equal to 1";

e.ValidationResults.Add(validationResult);

e.IsValid = false;

int Index = gvRiskMetrics.SelectedItems.IndexOf(gvRiskMetrics.SelectedItem);

var item = gvRiskMetrics.Items[Index];

var column = gvRiskMetrics.Columns[m_GroupItemsIndex[isum]];

gvRiskMetrics.ScrollIntoView(item, column);
var cellinfo = new GridViewCellInfo(item, column, gvRiskMetrics);

gvRiskMetrics.CurrentCellInfo = currentCell;
gvRiskMetrics.BeginEdit();

}

isum++;

}

Apparently this won't work since every time the current cell info is updated the the RowValidating event is called and the application essentially goes into an infinite loop. Do you have any suggestions? One other thing here is this behaviour does not occur on the first item in the Gridview collection(Row 1).

GridView

answered on 02 Mar 2011

4 answers

252 views

Replace Filter Operators

Does the grid support my replacing/removing the Filter operators?

Some column examples:

Total Sales (dollar format)
Replace filter textbox and operators menu with predefined options of "< 1 Million", "1 to 10 Million", "11 to 50 Million", and "> 50 Million".

Category (text but business rules only allow 3 categories)
So replace filter textbox and operators menu with the 3 categories, e.g. "Fruit", "Bread", "Meat"

GridView

answered on 01 Mar 2011

15 answers

2.0K+ views

[Solved] how to dynamically add DataGridViewComboBoxCell in telerik gridviews?

Hi All

I need to dynamically add DataGridViewComboBoxCell in telerik datagridview but I could not do that
is there any way to add such cells dynamically?

thanks

GridView

answered on 01 Mar 2011

2 answers

198 views

[Solved] Values and Customer Editors

I have created a custom editor for GridView (based on BaseGridEditor).

The nature of my editor is that the "Value" you select in the editor is actually two values (integers), there is also a text description I would like to be displayed in the grid when the cell is not edited.

I tried to make the editor expose an object of a class encapsulating my two values and the text description with the Value property. (The class had a ToString implementation that returned the text description).
I also tried to bind the grid to something like
Grid.DataSource = from s in whateversource select new {irrelevantfield = "whatever", complexfield = new ComplexClass { v1=o.v1, v2=o.v2, description=o.Description}};

However, the grid doesn't seem to want to remember my ComplexClass value, it seems it just runs ToString on what it gets from the editors Value property, because when I edit the cell again it sets the editors Value property to a string.

Can you recommend a way to
1. handle the selected "value" and text representation separately.
2. handle selected "values" that are complex, that is they are multiple values.

Thanks

GridView

answered on 01 Mar 2011

2 answers

205 views

[Solved] Binding to self referencing datatable

I get a "Object reference not set to an instance of an object." error when I run this simple VB form

Imports Oracle.DataAccess.Client
Imports Telerik.WinControls.UI

Public Class frmTreeView

Private cmdTemp As New OracleCommand
Private dvTemp As DataView
Private dtTemp As New DataTable
Private daTemp As OracleDataAdapter
Private dsTemp As New DataSet
Private Sub frmTreeView_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
With cmdTemp
    .CommandType = CommandType.StoredProcedure
    .Connection = db.oraCn
    .CommandText = "badgernet.web_read_util.group_tree"
    .Parameters.Clear()
    .Parameters.Add("out_rs", OracleDbType.RefCursor, DBNull.Value, ParameterDirection.Output)
End With
daTemp = New OracleDataAdapter(cmdTemp)
dtTemp.Clear()
daTemp.Fill(dtTemp)
dsTemp.Tables.Add(dtTemp)

tvGroups.DataSource = dsTemp
tvGroups.DisplayMember = "group_name"
tvGroups.ValueMember = "object_id"
tvGroups.ParentIDMember = "PARENT_ID" ' ERRORS ON THIS LINE
tvGroups.DataMember = "dtTemp"

End Sub
End Class

It runs if I comment out the offending line, without hierarchical support. There is a field named "parent_id". Any suggestions?
My data source looks like this. I need the child field to be group_id, but the valuemember to be object_id, if that's possible.

object_id group_id parent_id group_name
100 100 nullFootball
101 101 100 Offense
103 103 101 O-Line
110 110 101 Tight Ends
111 111 101 Recievers
112 112 101 Backs
65234 0 112 Duckworth, Jeff
113 113 112 Tailbacks
114 114 112 Fullbacks
102 102 100 Defense

Later
Art

Treeview

answered on 01 Mar 2011

6 answers

207 views

[Solved] Row questions

1. Is there a way where I can get a blank row/space between rows. That way the grid will look neater.
2. Is there a property or method which prevents a row being part of the filter.
3. Is there a property or method by which I can pin a row to the top so that it does not go off the view while scrolling vertically.

Thanks
Deepak

GridView

answered on 01 Mar 2011

2 answers

356 views

progress bar linking to form load

Hello...
I wanna link progress bar value to form load. Because to load the form its taking time so i wanna show the form loading status through progress bar. I tried with some code but the progress bar value is not syncing to form load. Can u help?

ProgressBar

answered on 01 Mar 2011

2 answers

178 views

[Solved] GridView always show focus

Hi

Visually the grid always shows as having focus even though some other control has focus. Can that be avoided?

Kindly advise any solution.

Regards!

GridView

answered on 01 Mar 2011

2 answers

202 views

[Solved] Set and Get Row By Row Number

Hi,
is there any way to set and and grid row like this example given below

1) Dim RowNum As Integer=grd.Row
2) grd.Row=i

* Where Row is grid property which gives row number
* where i is an integer like 1,2,3,.................................

GridView

answered on 01 Mar 2011