Questions on UI for WinForms Forum

7 answers

1.6K+ views

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

answered on 08 Jul 2019

2 answers

72 views

Get all appointments at a specific date/time

Hello,

Maybe it's a stupid question but I cannot find it anywhere.

I have a scheduler with several appointments (normal and recurring).

How can I retrieve all appointments at a specific date and time?

Best regards

Patrick Vossen

Scheduler and Reminder

answered on 08 Jul 2019

2 answers

133 views

FormWindowState.Maximized

I have a MDI form and trying to open the child screen. On the MDI screen I have a RadMenu on the top. When I load the app and pick a child fr the first time it loads correctly and is maximized, but when I open another child screen I close the current and then open the new screen and maximize the screen but it opens like the rad menu is not on the screen, so I lose the top section on the screen. I have not has this issue before. I am using framework 4.6.2 and I am using Telerik controls 2018 r2. I have not had this issue before.

Menu

answered on 08 Jul 2019

1 answer

192 views

get image size (in pixel) in radgridview

Hi.

I have a radgridview that contains many images. i want to get the image size (width and height in "pixel") of each image. how can i do that?

Note: i have no access to image sources (in fact, there is no any image source. all images are in binary format and has been converted to image automatically in radgridview's image columns).

thanks in advance

GridView

answered on 08 Jul 2019

15 answers

118 views

CustomFiltering and default FilterRow together

Hi everyone,

my trial period is almost over and I really like Telerik components.
There is just one little thing that I have issues with.

Let CustomFiltering and the default Filter via FilterRow work together.
I read examples about achieving this goal under C#, but I can't figure out how to make this work under VB.

Can anyone please help me?

Thank you in advance!
Bye

GridView

answered on 08 Jul 2019

1 answer

315 views

Messagebox Yes/No before changing switch the Toggle

hi all

i want to send a question to user "are u sure to switch off?" when user click on slide the toggle switcher.

how can do this?

set the snipped code in valueChanging action, but if user click on "No", the toggle switch to off!

if (switchtg.Value)

{

RadMessageBox.Instance.StartPosition = FormStartPosition.CenterParent;

if (RadMessageBox.Show("Are u sure ?", "disconnecting...", MessageBoxButtons.YesNo,

RadMessageIcon.Question, MessageBoxDefaultButton.Button2) == DialogResult.Yes)

{

//_allowdc = true;

switchtg.Value = true;

//switchtg.ValueChanged -= switchtg_ValueChanged;

}

else

{

// _allowdc = false;

switchtg.Value = false;

//switchtg.ValueChanged -= switchtg_ValueChanged;

}

New Product Suggestions

answered on 07 Jul 2019

3 answers

89 views

Drag&Drop with Custom Visual Item

Hey guys, I'm trying to do drag&drop functionality on RadListView, I'm currently using this example and it's works just fine, the only problem is when I'm using custom visual Item on RadListView, there is a little portion of the item where the mouse capture drag&drop, how can make it work for all inside child of my custom visual item?

class CartaoCustomVisualListView : SimpleListViewVisualItem

{

LightVisualElement tituloElement;

LightVisualElement dataInicioElement;

LightVisualElement dataEntregaElement;

LightVisualElement nomeBancoQueFezASolicitacao;

LightVisualElement progressoCartaoElement;

LightVisualElement totalChecklistElement;

LightVisualElement totalAnexosElement;

LightVisualElement totalComentariosElement;

StackLayoutPanel stackLayout;

protected override void CreateChildElements()

{

base.CreateChildElements();

stackLayout = new StackLayoutPanel();

stackLayout.Orientation = System.Windows.Forms.Orientation.Vertical;

tituloElement = new LightVisualElement();

tituloElement.Click += (e, f) => this.DoClick(f);

tituloElement.TextAlignment = System.Drawing.ContentAlignment.MiddleLeft;

tituloElement.TextWrap = true;

tituloElement.Margin = new System.Windows.Forms.Padding(10, 2, 2, 2);

tituloElement.Font = new System.Drawing.Font("Segoe UI", 10, System.Drawing.FontStyle.Bold, GraphicsUnit.Point);

tituloElement.ForeColor = Color.Black;

tituloElement.AutoSize = true;

tituloElement.AutoSizeMode = RadAutoSizeMode.Auto;

stackLayout.Children.Add(tituloElement);

dataInicioElement = new LightVisualElement();

dataInicioElement.Click += (e, f) => this.DoClick(f);

dataInicioElement.TextAlignment = System.Drawing.ContentAlignment.MiddleLeft;

dataInicioElement.Margin = new System.Windows.Forms.Padding(10, 2, 0, 2);

dataInicioElement.Font = new System.Drawing.Font("Segoe UI", 8, System.Drawing.FontStyle.Regular, GraphicsUnit.Point);

dataInicioElement.ForeColor = Color.Black;

dataInicioElement.AutoSize = true;

dataInicioElement.AutoSizeMode = RadAutoSizeMode.Auto;

stackLayout.Children.Add(dataInicioElement);

dataEntregaElement = new LightVisualElement();

dataEntregaElement.Click += (e, f) => this.DoClick(f);

dataEntregaElement.TextAlignment = System.Drawing.ContentAlignment.MiddleLeft;

dataEntregaElement.Margin = new System.Windows.Forms.Padding(10, 2, 0, 2);

dataEntregaElement.Font = new System.Drawing.Font("Segoe UI", 8, System.Drawing.FontStyle.Regular, GraphicsUnit.Point);

dataEntregaElement.ForeColor = Color.Black;

dataEntregaElement.AutoSize = true;

dataEntregaElement.AutoSizeMode = RadAutoSizeMode.Auto;

stackLayout.Children.Add(dataEntregaElement);

nomeBancoQueFezASolicitacao = new LightVisualElement();

nomeBancoQueFezASolicitacao.Click += (e, f) => this.DoClick(f);

nomeBancoQueFezASolicitacao.TextAlignment = System.Drawing.ContentAlignment.MiddleLeft;

nomeBancoQueFezASolicitacao.Margin = new System.Windows.Forms.Padding(10, 2, 0, 2);

nomeBancoQueFezASolicitacao.Font = new System.Drawing.Font("Segoe UI", 8, System.Drawing.FontStyle.Regular, GraphicsUnit.Point);

nomeBancoQueFezASolicitacao.ForeColor = Color.Black;

nomeBancoQueFezASolicitacao.AutoSize = true;

nomeBancoQueFezASolicitacao.AutoSizeMode = RadAutoSizeMode.Auto;

stackLayout.Children.Add(nomeBancoQueFezASolicitacao);

progressoCartaoElement = new LightVisualElement();

progressoCartaoElement.Click += (e, f) => this.DoClick(f);

progressoCartaoElement.TextAlignment = System.Drawing.ContentAlignment.MiddleLeft;

progressoCartaoElement.Margin = new System.Windows.Forms.Padding(10, 2, 0, 2);

progressoCartaoElement.Font = new System.Drawing.Font("Segoe UI", 8, System.Drawing.FontStyle.Regular, GraphicsUnit.Point);

progressoCartaoElement.ForeColor = Color.Black;

progressoCartaoElement.AutoSize = true;

progressoCartaoElement.AutoSizeMode = RadAutoSizeMode.Auto;

stackLayout.Children.Add(progressoCartaoElement);

totalAnexosElement = new LightVisualElement();

totalAnexosElement.Click += (e, f) => this.DoClick(f);

totalAnexosElement.TextAlignment = System.Drawing.ContentAlignment.MiddleRight;

totalAnexosElement.Margin = new System.Windows.Forms.Padding(10, 1, 10, 1);

totalAnexosElement.Font = new System.Drawing.Font("Segoe UI", 8, System.Drawing.FontStyle.Bold, GraphicsUnit.Point);

totalAnexosElement.ForeColor = SystemColors.AppWorkspace;

totalAnexosElement.AutoSize = true;

totalAnexosElement.AutoSizeMode = RadAutoSizeMode.Auto;

totalAnexosElement.DrawText = true;

stackLayout.Children.Add(totalAnexosElement);

totalChecklistElement = new LightVisualElement();

totalChecklistElement.Click += (e, f) => this.DoClick(f);

totalChecklistElement.TextAlignment = System.Drawing.ContentAlignment.MiddleRight;

totalChecklistElement.Margin = new System.Windows.Forms.Padding(10, 1, 10, 1);

totalChecklistElement.Font = new System.Drawing.Font("Segoe UI", 8, System.Drawing.FontStyle.Bold, GraphicsUnit.Point);

totalChecklistElement.ForeColor = SystemColors.AppWorkspace;

totalChecklistElement.AutoSize = true;

totalChecklistElement.AutoSizeMode = RadAutoSizeMode.Auto;

totalChecklistElement.DrawText = true;

stackLayout.Children.Add(totalChecklistElement);

totalComentariosElement = new LightVisualElement();

totalComentariosElement.Click += (e, f) => this.DoClick(f);

totalComentariosElement.TextAlignment = System.Drawing.ContentAlignment.MiddleRight;

totalComentariosElement.Margin = new System.Windows.Forms.Padding(10, 1, 10, 1);

totalComentariosElement.Font = new System.Drawing.Font("Segoe UI", 8, System.Drawing.FontStyle.Bold, GraphicsUnit.Point);

totalComentariosElement.ForeColor = SystemColors.AppWorkspace;

totalComentariosElement.AutoSize = true;

totalComentariosElement.AutoSizeMode = RadAutoSizeMode.Auto;

totalComentariosElement.DrawText = true;

stackLayout.Children.Add(totalComentariosElement);

Children.Add(stackLayout);

Shape = new RoundRectShape(5);

this.BackColor = Color.White;

this.Padding = new Padding(5);

}

protected override void SynchronizeProperties()

{

var bound = this.Data.DataBoundItem as cartao_model;

if(bound != null)

{

tituloElement.Text = bound.obj_cartao.titulo;

if (bound.obj_cartao.data_inicio != null)

{

dataInicioElement.Text = "Data inicio: " + bound.obj_cartao.data_inicio.ToString();

dataInicioElement.Visibility = ElementVisibility.Visible;

}

else

dataInicioElement.Visibility = ElementVisibility.Collapsed;

if (bound.obj_cartao.data_entrega != null)

{

dataEntregaElement.Text = "Data entrega: " + bound.obj_cartao.data_entrega.ToString();

dataEntregaElement.Visibility = ElementVisibility.Visible;

}

else

dataEntregaElement.Visibility = ElementVisibility.Collapsed;

if (bound.obj_cartao.id_banco_de_dados != null && bound.obj_cartao.id_banco_de_dados != 0)

{

nomeBancoQueFezASolicitacao.Text = "Solicitador por: " + bound.obj_cartao.banco_de_dados.nome;

nomeBancoQueFezASolicitacao.Visibility = ElementVisibility.Visible;

}

else

nomeBancoQueFezASolicitacao.Visibility = ElementVisibility.Collapsed;

if (bound.anexos.TemRegistro())

{

totalAnexosElement.Visibility = ElementVisibility.Visible;

totalAnexosElement.Text = $"anexos: {bound.anexos.Count()}";

}

else

totalAnexosElement.Visibility = ElementVisibility.Collapsed;

int totalConcluidos = 0, totalItens = 0;

if (bound.obj_cartao.checklist.TemRegistro())

{

totalChecklistElement.Visibility = ElementVisibility.Visible;

foreach(var item in bound.obj_cartao.checklist)

{

totalConcluidos = totalConcluidos + item.itens.Where(c => c.concluido == true).Count();

totalItens = totalItens + item.itens.Count();

if(totalItens == totalConcluidos)

{

totalChecklistElement.ForeColor = Color.Green;

totalChecklistElement.Font = new System.Drawing.Font("Segoe UI", 8, System.Drawing.FontStyle.Bold, GraphicsUnit.Point);

}

else

{

totalChecklistElement.ForeColor = SystemColors.AppWorkspace;

totalChecklistElement.Font = new System.Drawing.Font("Segoe UI", 8, System.Drawing.FontStyle.Bold, GraphicsUnit.Point);

}

totalChecklistElement.Text = $"checklist: {totalConcluidos}/{totalItens}";

}

else

totalChecklistElement.Visibility = ElementVisibility.Collapsed;

if (bound.comentarios.TemRegistro())

{

totalComentariosElement.Visibility = ElementVisibility.Visible;

totalComentariosElement.Text = $"comentários: {bound.comentarios.Count()}";

}

else

totalComentariosElement.Visibility = ElementVisibility.Collapsed;

progressoCartaoElement.Text ="Status: " + bound.obj_cartao.progresso_cartao.GetDescription();

}

ListView

answered on 05 Jul 2019

1 answer

88 views

ProgressBar does not collapse inside StatusStrip

Hi,

I am trying to collapse ProgressBar inside StatusStrip, with that code:

Me.RadProgressBarElement1.Visibility = ElementVisibility.Collapsed

The ProgressBar is been hidded but not collapsed.

Is there any bug or something else I must aplly for collapse ProgressBar?

Thanks you!

StatusStrip

answered on 05 Jul 2019

4 answers

123 views

How to change WaitingBar Style in Q1 2011?

Hello,

I wanted to change my WaitingBar style via examples in documentations but my waiting bar didn't have the WaitingStyle property!
So I think this is because of my Telerik version: 2010.2.10.713

How can I write this code in my version if it is supported in this version?

this.radWaitingBar1.WaitingStyle = Telerik.WinControls.Enumerations.WaitingBarStyles.Dash;

WaitingBar

answered on 05 Jul 2019

4 answers

1.1K+ views

Define row height and width when exporting to excel

Hi. I have a radgridview with some data columns and one image column. I want to set row height and width manually (to fit the images and all data) before exporting to Excel (note: i dont want to use "ExportVisualSettings" property).

so... what should i do?

GridView