Questions on UI for WinForms Forum

18,690 questions

2 answers

202 views

Hi everyone!

I'm trying to reproduce the example for ListView shown in

https://docs.telerik.com/devtools/winforms/controls/listview/getting-started

But instead of using a fixed DataTable, I'm connecting to a database. As I return a DataTable, everything was going ok until I found the word "MusicCollectionDataSet.SongsDataTableRow" and for example the line MusicCollectionDataSet.SongsDataTableRow songRow = row.Row as MusicCollectionDataSet.SongsDataTableRow; but as I have changed the DataSource to a DataTable from the Database, I don't know what is the script to replace those lines.

I attached an image. Please Help. Thanks in advance.

Regards,

Walter

ListView

answered on 16 Jul 2019

2 answers

176 views

Time Property Type

Hi,

I've managed to work out most property types but I'm struggling how to have a property in Time format.

I.e. is there a time editor like RadTimePicker within the propertygrid to enter a specified time?

Thanks.

PropertyGrid

answered on 16 Jul 2019

1 answer

161 views

Displaying Child objects per Parent Row

Hi there,

For Example I have the following class structures.

List<ParentA> which I populate and bind it to a radGridView.

This ParentA object contains a List of child objects that I want to display as Child rows per ParentA.

I have AutogenerateHierarchy set to true, but the children aren't now appearing. Is there something else I need to do to get them to display?

Thanks,

Brad

GridView

answered on 15 Jul 2019

7 answers

107 views

Combination of ScatterSeries and arbitrary area

I need a graph where a ScatterSeries is drawn and also some arbitrary area is drawn (see figure). How to do it?

ChartView

answered on 10 Jul 2019

1 answer

86 views

remove shape

how can i remove shape on controler_TextNeede ?

ChartView

answered on 09 Jul 2019

6 answers

2.1K+ views

Vertical text box

Is it possible to rotate a text box to display it vertically as per the attached mockup ?

Thanks in advance

PJ Pralong

Buttons, RadioButton, CheckBox, etc

answered on 09 Jul 2019

2 answers

234 views

Hide Settings Button in Search

Hi,

Please help me to hide the settings button near to the search textbox.

Image attached.

Thanks in advance

GridView

answered on 08 Jul 2019

4 answers

98 views

Bound Radgridview exception when Keypress into the Search Row

Hello

I contact you because I have been a problem for several days and I can not find the solution

I have a bound radgridview control in readonly. I allow to search row.

When I write something in the search row, my application is crashing.

You can download my simple example HERE

Thank you for your help

Good job, the telerik team ;-)

Fabrizio

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using Telerik.WinControls;

using Telerik.WinControls.UI;

namespace test

{

public partial class RadForm1 : Telerik.WinControls.UI.RadForm

{

#region School class

public class School

{

public Guid Id { get; set; }

public string Name { get; set; }

public short SchoolYear { get; set; }

public string Locality { get; set; }

public string Titulaire { get; set; }

public short Degre { get; set; }

public List<Student> Students = new List<Student>();

public void AddStudent(Student student)

{

Students.Add(student);

}

public void RemoveStudent(Student student)

{

Students.Remove(student);

}

public int NombreEleve => Students.Count;

}

#endregion

#region Student class

public class Student

{

public Guid Id { get; set; }

public string FirstName { get; set; }

public string LastName { get; set; }

public Guid IdSchool { get; set; }

public List<Cote> Cotes = new List<Cote>();

public School School = new School();

public string FullName => $"{LastName} {FirstName}";

public string SchoolName => School.Name;

public int NombreCote => Cotes.Count;

public void AddCote(Cote cote)

{

Cotes.Add(cote);

}

public void RemoveCote(Cote cote)

{

Cotes.Remove(cote);

}

#endregion

#region Discipline class

public class Discipline

{

public Guid Id { get; set; }

public string Name { get; set; }

public List<Control> Controls = new List<Control>();

public int NombreControle => Controls.Count;

public void AddControl(Control control)

{

Controls.Add(control);

}

public void RemoveControl(Control control)

{

Controls.Remove(control);

}

#endregion

#region Control class

public class Control

{

public Guid Id { get; set; }

public string Title { get; set; }

public DateTime Date { get; set; }

public decimal Quotation { get; set; }

public short Period { get; set; }

public Guid IdDiscipline { get; set; }

public Discipline Discipline { get; set; }

public List<Cote> Cotes = new List<Cote>();

public void AddCote(Cote cote)

{

Cotes.Add(cote);

}

public void RemoveCote(Cote cote)

{

Cotes.Remove(cote);

}

public string DisciplineName => Discipline.Name;

public int NombreCote => Cotes.Count;

}

#endregion

#region Cote class

public class Cote

{

public enum eQuotationState

{

Top = 0,

Defeat,

Average,

Good,

Absent

}

public Guid IdStudent { get; set; }

public Guid IdControl { get; set; }

public DateTime Date { get; set; }

public decimal? Quotation { get; set; }

public Guid Id { get; set; }

public Control Control { get; set; }

public Student Student { get; set; }

public string FullNameStudent => Student?.FullName;

public Guid? IdSchool => Student?.IdSchool;

public string SchoolName => Student?.SchoolName;

public string ControlTitle => Control?.Title;

public Int16? ControlPeriod => Control?.Period;

public Guid? IdDiscipline => Control?.IdDiscipline;

public string DisciplineName => Control?.DisciplineName;

public decimal ControlQuotation => Control?.Quotation ?? 0M;

public bool IsAbsent => (Quotation == null);

public eQuotationState QuotationState =>

(

IsAbsent ?

eQuotationState.Absent :

(Quotation < (Control.Quotation / 2)) ?

eQuotationState.Defeat :

(Quotation == (Control.Quotation / 2)) ?

eQuotationState.Average :

(Quotation == Control.Quotation) ?

eQuotationState.Top :

eQuotationState.Good

);

}

#endregion

private BindingList<School> _schools = new BindingList<School>();

private BindingList<Student> _students = new BindingList<Student>();

private BindingList<Discipline> _disciplines = new BindingList<Discipline>();

private BindingList<Control> _controls = new BindingList<Control>();

private BindingList<Cote> _cotes = new BindingList<Cote>();

public RadForm1()

{

CreateDatas();

InitializeComponent();

CreateBoundQuotationGrid();

}

private void CreateDatas()

{

var school1 = new School { Id = Guid.NewGuid(), Degre = 1, Name = "School 1", SchoolYear = 2019, Titulaire = "Name 1" };

_schools.Add(school1);

var student1 = new Student { Id = Guid.NewGuid(), FirstName = "Toto", LastName = "Toto", School = school1, IdSchool = school1.Id };

var student2 = new Student { Id = Guid.NewGuid(), FirstName = "Tata", LastName = "Tata", School = school1, IdSchool = school1.Id };

_students.Add(student1);

_students.Add(student2);

school1.Students.AddRange(_students.Where(x => x.IdSchool == school1.Id));

var discipline1 = new Discipline { Id = Guid.NewGuid(), Name = "French" };

var discipline2 = new Discipline { Id = Guid.NewGuid(), Name = "English" };

_disciplines.Add(discipline1);

_disciplines.Add(discipline2);

var control1 = new

Control { Id = Guid.NewGuid(), Discipline = discipline1, IdDiscipline = discipline1.Id, Date = DateTime.Now, Period = 1, Title =

"French control 1", Quotation = 10M };

var control2 = new

Control { Id = Guid.NewGuid(), Discipline = discipline1, IdDiscipline = discipline1.Id, Date = DateTime.Now, Period = 1, Title =

"French control 2", Quotation = 20M };

var control3 = new

Control { Id = Guid.NewGuid(), Discipline = discipline1, IdDiscipline = discipline1.Id, Date = DateTime.Now, Period = 2, Title =

"French control 3", Quotation = 30M };

var control4 = new

Control { Id = Guid.NewGuid(), Discipline = discipline2, IdDiscipline = discipline2.Id, Date = DateTime.Now, Period = 2, Title =

"Ensglish control 1", Quotation = 100M };

var control5 = new

Control { Id = Guid.NewGuid(), Discipline = discipline2, IdDiscipline = discipline2.Id, Date = DateTime.Now, Period = 2, Title =

"Ensglish control 2", Quotation = 200M };

var control6 = new

Control { Id = Guid.NewGuid(), Discipline = discipline2, IdDiscipline = discipline2.Id, Date = DateTime.Now, Period = 1, Title =

"Ensglish control 3", Quotation = 300M };

_controls.Add(control1);

_controls.Add(control2);

_controls.Add(control3);

_controls.Add(control4);

_controls.Add(control5);

_controls.Add(control6);

discipline1.Controls.AddRange(_controls.Where(x => x.IdDiscipline == discipline1.Id));

discipline2.Controls.AddRange(_controls.Where(x => x.IdDiscipline == discipline2.Id));

var cote1 = new

Cote { Id = Guid.Empty, Date = DateTime.Now, Control = control1, IdControl = control1.Id, Student = student1, IdStudent = student1.Id, Quotation = 10M };

var cote2 = new

Cote { Id = Guid.Empty, Date = DateTime.Now, Control = control1, IdControl = control1.Id, Student = student2, IdStudent = student2.Id, Quotation = 0M };

var cote3 = new

Cote { Id = Guid.Empty, Date = DateTime.Now, Control = control2, IdControl = control2.Id, Student = student1, IdStudent = student1.Id, Quotation = 10M };

var cote4 = new

Cote { Id = Guid.Empty, Date = DateTime.Now, Control = control3, IdControl = control3.Id, Student = student1, IdStudent = student1.Id, Quotation = 30M };

var cote5 = new

Cote { Id = Guid.Empty, Date = DateTime.Now, Control = control4, IdControl = control4.Id, Student = student2, IdStudent = student2.Id, Quotation = 100M };

var cote6 = new

Cote { Id = Guid.Empty, Date = DateTime.Now, Control = control5, IdControl = control5.Id, Student = student2, IdStudent = student2.Id, Quotation =

default(decimal?) };

var cote7 = new

Cote { Id = Guid.Empty, Date = DateTime.Now, Control = control6, IdControl = control6.Id, Student = student1, IdStudent = student1.Id, Quotation = 200M };

var cote8 = new

Cote { Id = Guid.Empty, Date = DateTime.Now, Control = control6, IdControl = control6.Id, Student = student2, IdStudent = student2.Id, Quotation = 0M };

_cotes.Add(cote1);

_cotes.Add(cote2);

_cotes.Add(cote3);

_cotes.Add(cote4);

_cotes.Add(cote5);

_cotes.Add(cote6);

_cotes.Add(cote7);

_cotes.Add(cote8);

student1.Cotes.AddRange(_cotes.Where(x => x.IdStudent == student1.Id));

student2.Cotes.AddRange(_cotes.Where(x => x.IdStudent == student2.Id));

control1.Cotes.AddRange(_cotes.Where(x => x.IdControl == control1.Id));

control2.Cotes.AddRange(_cotes.Where(x => x.IdControl == control2.Id));

control3.Cotes.AddRange(_cotes.Where(x => x.IdControl == control3.Id));

control4.Cotes.AddRange(_cotes.Where(x => x.IdControl == control4.Id));

control5.Cotes.AddRange(_cotes.Where(x => x.IdControl == control5.Id));

control6.Cotes.AddRange(_cotes.Where(x => x.IdControl == control6.Id));

}

/// <summary>

/// Création des DGV adéquats

/// </summary>

private void CreateBoundQuotationGrid()

{

using (this.radGridView1.DeferRefresh())

{

radGridView1.ShowFilteringRow = true;

radGridView1.EnableFiltering = true;

radGridView1.MasterTemplate.Reset();

radGridView1.MasterTemplate.ShowTotals = true;

radGridView1.MasterTemplate.AddNewBoundRowBeforeEdit = true;

radGridView1.MasterView.TableAddNewRow.IsPinned = true;

radGridView1.MasterView.TableAddNewRow.PinPosition = PinnedRowPosition.Top;

radGridView1.MasterView.TableSearchRow.CloseOnEscape = false;

radGridView1.MasterView.TableSearchRow.ShowCloseButton = false;

radGridView1.TableElement.RowHeaderColumnWidth = 50;

// Ajouter la ligne des totaux

radGridView1.SummaryRowsBottom.Add(new GridViewSummaryRowItem(new GridViewSummaryItem[]

{

new GridViewSummaryItem("CoteColumn", "Total {0:N2}", GridAggregateFunction.Sum),

new GridViewSummaryItem("NomEleveColumn", "{0} cotes", GridAggregateFunction.Count)

}));

radGridView1.MasterView.SummaryRows[0].IsPinned = true;

radGridView1.MasterView.SummaryRows[0].PinPosition = PinnedRowPosition.Bottom;

radGridView1.BottomPinnedRowsMode = GridViewBottomPinnedRowsMode.Fixed;

radGridView1.MasterTemplate.Columns.Add(new GridViewComboBoxColumn("PeriodeColumn", "ControlPeriod")

{

HeaderText = "Period",

TextAlignment = ContentAlignment.MiddleCenter,

HeaderTextAlignment = ContentAlignment.MiddleCenter,

AutoSizeMode = BestFitColumnMode.AllCells,

MinWidth = 80,

DropDownStyle = RadDropDownStyle.DropDownList,

FilteringMode = GridViewFilteringMode.DisplayMember

});

radGridView1.MasterTemplate.Columns.Add(new GridViewComboBoxColumn("DisciplineColumn", "IdDiscipline")

{

HeaderText = "Discipline",

TextAlignment = ContentAlignment.MiddleLeft,

HeaderTextAlignment = ContentAlignment.MiddleCenter,

AutoSizeMode = BestFitColumnMode.AllCells,

MinWidth = 160,

DropDownStyle = RadDropDownStyle.DropDownList,

ValueMember = "Id",

DisplayMember = "Name",

FilteringMode = GridViewFilteringMode.DisplayMember,

Tag = false

});

radGridView1.MasterTemplate.Columns.Add(new GridViewComboBoxColumn("LibelleControleColumn", "IdControl")

{

HeaderText = "Control title",

TextAlignment = ContentAlignment.MiddleLeft,

HeaderTextAlignment = ContentAlignment.MiddleCenter,

AutoSizeMode = BestFitColumnMode.AllCells,

WrapText = true,

MinWidth = 160,

DropDownStyle = RadDropDownStyle.DropDownList,

ValueMember = "Id",

DisplayMember = "Title",

FilteringMode = GridViewFilteringMode.DisplayMember,

Tag = false

});

radGridView1.MasterTemplate.Columns.Add(new GridViewComboBoxColumn("LibelleClasseColumn", "IdSchool")

{

HeaderText = "School name",

TextAlignment = ContentAlignment.MiddleLeft,

HeaderTextAlignment = ContentAlignment.MiddleCenter,

AutoSizeMode = BestFitColumnMode.AllCells,

WrapText = true,

MinWidth = 160,

DropDownStyle = RadDropDownStyle.DropDownList,

ValueMember = "Id",

DisplayMember = "Name",

FilteringMode = GridViewFilteringMode.DisplayMember,

Tag = false

});

radGridView1.MasterTemplate.Columns.Add(new GridViewComboBoxColumn("NomEleveColumn", "IdStudent")

{

HeaderText = "Student fullname",

TextAlignment = ContentAlignment.MiddleLeft,

HeaderTextAlignment = ContentAlignment.MiddleCenter,

AutoSizeMode = BestFitColumnMode.AllCells,

MinWidth = 160,

DropDownStyle = RadDropDownStyle.DropDownList,

ValueMember = "Id",

DisplayMember = "FullName",

FilteringMode = GridViewFilteringMode.DisplayMember,

Tag = false

});

radGridView1.MasterTemplate.Columns.Add(new GridViewDateTimeColumn("DateColumn", "Date")

{

HeaderText = "Date",

TextAlignment = ContentAlignment.MiddleCenter,

HeaderTextAlignment = ContentAlignment.MiddleCenter,

AutoSizeMode = BestFitColumnMode.AllCells,

MinWidth = 100,

MaxWidth = 100,

Format = DateTimePickerFormat.Short,

FormatString = "{0:d}",

Tag = true

});

radGridView1.MasterTemplate.Columns.Add(new GridViewDecimalColumn("CoteColumn", "Quotation")

{

HeaderText = "Quotation",

TextAlignment = ContentAlignment.MiddleCenter,

HeaderTextAlignment = ContentAlignment.MiddleCenter,

AutoSizeMode = BestFitColumnMode.AllCells,

DecimalPlaces = 2,

ShowUpDownButtons = false,

AllowGroup = false,

Minimum = 0,

MinWidth = 130,

Tag = true

});

radGridView1.MasterTemplate.Columns.Add(new GridViewDecimalColumn("QuotationStateColumn", "QuotationState")

{

HeaderText = "State",

TextAlignment = ContentAlignment.MiddleCenter,

HeaderTextAlignment = ContentAlignment.MiddleCenter,

AutoSizeMode = BestFitColumnMode.AllCells,

DecimalPlaces = 2,

ShowUpDownButtons = false,

ReadOnly = true

});

}

public void SetBindingColumnsQuotation()

{

var periodColumn = (this.radGridView1.MasterTemplate.Columns["PeriodeColumn"] as GridViewComboBoxColumn);

periodColumn.DataSource = _controls.Select(x => x.Period).Distinct().OrderBy(x => x);

var matiereColumn = (this.radGridView1.MasterTemplate.Columns["DisciplineColumn"] as GridViewComboBoxColumn);

matiereColumn.DataSource = _controls.Select(x => x.Discipline).Distinct().OrderBy(x => x.Name);

var controlColumn = (this.radGridView1.MasterTemplate.Columns["LibelleControleColumn"] as GridViewComboBoxColumn);

controlColumn.DataSource = _controls.OrderBy(x => x.Title);

var schoolColumn = (this.radGridView1.MasterTemplate.Columns["LibelleClasseColumn"] as GridViewComboBoxColumn);

schoolColumn.DataSource = _students.Select(x => x.School).Distinct().OrderBy(x => x.Name);

var studentColumn = (this.radGridView1.MasterTemplate.Columns["NomEleveColumn"] as GridViewComboBoxColumn);

studentColumn.DataSource = _students.OrderBy(x => x.FullName);

}

private void RadForm1_Load(object sender, EventArgs e)

{

using (radGridView1.DeferRefresh())

radGridView1.DataSource = _cotes;

radGridView1.MasterTemplate.BestFitColumns(BestFitColumnMode.AllCells);

SetBindingColumnsQuotation();

WindowState = FormWindowState.Maximized;

}

GridView

answered on 08 Jul 2019

7 answers

1.8K+ views

Implementing "Select All" Checkbox

Hi there,

I am having some trouble implementing a "select all" checkbox for the RadGridView. I have successfully added checkboxes to group headers as shown in the attached screenshot. I need the ability to tick a box (which sits outside the grid) so it will select or deselect all items in the grid.

Currently when I click on the "select all" checkbox, only four items are selected in the grid out of 131. I believe this has something to do with the control reusing cells. I have implemented the following class.

public class CustomGroupCellHeader : GridGroupContentCellElement

{

public event EventHandler CheckChanged;

public RadCheckBoxElement Checkbox { get; set; }

public GridViewColumn Column { get; set; }

public GridRowElement Row { get; set; }

public Guid OperatorId { get; set; }

public string OperatorName { get; set; }

public CustomGroupCellHeader(GridViewColumn column, GridRowElement row) :

base(column, row)

{

this.Column = column;

this.Row = row;

}

protected override void CreateChildElements()

{

base.CreateChildElements();

this.Checkbox = new RadCheckBoxElement();

this.Checkbox.MinSize = new Size(10, 10);

this.Checkbox.ToggleStateChanged += new StateChangedEventHandler(_checkbox_ToggleStateChanged);

this.Children.Insert(0, this.Checkbox);

}

protected override System.Drawing.SizeF ArrangeOverride(System.Drawing.SizeF finalSize)

{

SizeF size = base.ArrangeOverride(finalSize);

RectangleF rect = GetClientRectangle(finalSize);

if (this.Checkbox != null)

{

this.Checkbox.Arrange(new RectangleF(rect.X, rect.Y + 5, 10, 10));

}

return size;

}

private void _checkbox_ToggleStateChanged(object sender, StateChangedEventArgs args)

{

if (this.CheckChanged != null)

{

this.CheckChanged(this, null);

}

I have also added the following code into the CreateCell event handler:

private List<CustomGroupCellHeader> _groupCheckboxes = new List<CustomGroupCellHeader>();

private void results_CreateCell(object sender, GridViewCreateCellEventArgs e)

{

if (e.CellType == typeof(GridGroupContentCellElement))

{

CustomGroupCellHeader customCell = new CustomGroupCellHeader(e.Column, e.Row);

customCell.CheckChanged += new EventHandler(customCell_CheckChanged);

e.CellElement = customCell;

_groupCheckboxes.Add(customCell);

}

The variable _groupCheckboxes is intended to store the checkboxes for group headers. How can I ensure that this variable stores ALL checkboxes for group headers?

Thanks

GridView