Questions on UI for WinForms Forum

2 answers

96 views

Help with simple carousel layout needed please

Hey all,

I'm trying to do a very simple carousel, with just 3 buttons, each with a 128px image and text underneath. The layout I'm trying to achieve (I keep getting close, but cannot get it right), is to have the main/active button to be front and center, with the 2 other buttons aligned evenly behind and to the side (respectively) of the main/active button. The 2 inactive buttons would ideally be slightly opaque to help the main/active button stand out.

I've attached a crude, but simple drawing of what the layout should look like (although I don't think the pic is perfectly aligned).

Any chance someone can help me with the carousel path settings? Maybe someone already has done this and can just provide the correct settings.

Thank you so much for any help you can provide!

Carousel

answered on 06 Jan 2012

1 answer

95 views

GridCommandCell Element still appears disabled after it is enabled

I have encountered a problem where I enabled a GridCommandCellElement in the ViewCellFormatting event handler. The cell/button is enabled but it appears disabled (grayed out). The cell/button only appears enabled (not grayed out) after the focus is shifted to the row that contains the cell/button.

I have attached a sample project that I used to reproduce the issue. To reproduce this issue:

1. Delete the fourth row which has a Year of '4'. This will enable the insert ('+') button for the third row.
2. You can click on the insert ('+') button for the third row even though it appears disabled and a new row will be inserted.
3. If you click in the row header for the third row, the insert ('+') button, will now appear enabled.

The issue is why does the cell/button appear to be disabled still after it has been enabled in the code.

Here is the cs file:

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.Primitives;

using Telerik.WinControls.UI;

namespace GridCellEnabled

{

public partial class Form1 : Form

{

private GridViewTextBoxColumn _yearColumn = null;

private GridViewTextBoxColumn _valueColumn = null;

private GridViewCommandColumn _insertRowColumn = null;

private GridViewCommandColumn _deleteRowColumn = null;

public Form1()

{

InitializeComponent();

}

private void Form1_Load(object sender, EventArgs e)

{

SetupGrid();

}

private void SetupGrid()

{

// Add Columns

{

// Year Column

{

_yearColumn = new GridViewTextBoxColumn();

_yearColumn.Name = "Year";

_yearColumn.HeaderText = "Year";

_grid.Columns.Add(_yearColumn);

}

// Value Column

{

_valueColumn = new GridViewTextBoxColumn();

_valueColumn.Name = "Value";

_valueColumn.HeaderText = "Value";

_grid.Columns.Add(_valueColumn);

}

// Insert Row Column

{

_insertRowColumn = new GridViewCommandColumn();

_insertRowColumn.Name = "InsertRow";

_insertRowColumn.HeaderText = string.Empty;

_insertRowColumn.UseDefaultText = true;

_insertRowColumn.DefaultText = "+";

_insertRowColumn.MinWidth = 20;

_insertRowColumn.TextAlignment = ContentAlignment.MiddleCenter;

_grid.Columns.Add(_insertRowColumn);

}

// Delete Row Column

{

_deleteRowColumn = new GridViewCommandColumn();

_deleteRowColumn.Name = "DeleteRow";

_deleteRowColumn.HeaderText = string.Empty;

_deleteRowColumn.UseDefaultText = true;

_deleteRowColumn.DefaultText = "-";

_deleteRowColumn.MinWidth = 20;

_deleteRowColumn.TextAlignment = ContentAlignment.MiddleCenter;

_grid.Columns.Add(_deleteRowColumn);

}

// Add Rows

{

for (int i = 1; i <= 5; i++)

{

GridViewRowInfo row = _grid.Rows.AddNew();

row.Cells[_yearColumn.Name].Value = i;

row.Cells[_valueColumn.Name].Value = i * 10;

}

_grid.BestFitColumns();

}

private void _grid_CommandCellClick(object sender, EventArgs e)

{

GridViewCellEventArgs args = e as GridViewCellEventArgs;

if (args.Column == _insertRowColumn)

{

InsertRow(args.RowIndex);

}

else if (args.Column == _deleteRowColumn)

{

DeleteRow(args.RowIndex);

}

private void InsertRow(int aRow)

{

GridViewDataRowInfo rowInfo = new GridViewDataRowInfo(_grid.MasterView);

int startYear = Convert.ToInt32(_grid.Rows[aRow].Cells["Year"].Value) + 1;

rowInfo.Cells[_yearColumn.Name].Value = startYear;

rowInfo.Cells[_valueColumn.Name].Value = startYear * 10;

_grid.Rows.Insert(aRow + 1, rowInfo);

}

private void DeleteRow(int aRow)

{

_grid.Rows.RemoveAt(aRow);

}

private void _grid_ViewCellFormatting(object sender, CellFormattingEventArgs e)

{

if (e.CellElement is GridCommandCellElement && e.RowIndex >= 0)

{

if (e.Column == _insertRowColumn)

{

if (e.RowIndex + 1 < _grid.RowCount)

{

int startYear = Convert.ToInt32(_grid.Rows[e.RowIndex].Cells[_yearColumn.Name].Value);

int nextYear = Convert.ToInt32(_grid.Rows[e.RowIndex + 1].Cells[_yearColumn.Name].Value);

if ((startYear + 1) == nextYear)

{

e.CellElement.Enabled = false;

}

else

{

e.CellElement.Enabled = true;

}

else

{

e.CellElement.Enabled = true;

}

else if (e.Column == _deleteRowColumn)

{

if (e.RowIndex == 0)

{

e.CellElement.Enabled = false;

}

else

{

e.CellElement.Enabled = true;

}

Here is the Designer.cs file:

namespace GridCellEnabled

{

partial class Form1

{

/// <summary>

/// Required designer variable.

/// </summary>

private System.ComponentModel.IContainer components = null;

/// <summary>

/// Clean up any resources being used.

/// </summary>

/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>

protected override void Dispose(bool disposing)

{

if (disposing && (components != null))

{

components.Dispose();

}

base.Dispose(disposing);

}

#region Windows Form Designer generated code

/// <summary>

/// Required method for Designer support - do not modify

/// the contents of this method with the code editor.

/// </summary>

private void InitializeComponent()

{

this._grid = new Telerik.WinControls.UI.RadGridView();

((System.ComponentModel.ISupportInitialize)(this._grid)).BeginInit();

this.SuspendLayout();

//

// _grid

//

this._grid.Location = new System.Drawing.Point(12, 12);

this._grid.Name = "_grid";

this._grid.Size = new System.Drawing.Size(260, 238);

this._grid.TabIndex = 0;

this._grid.ViewCellFormatting += new Telerik.WinControls.UI.CellFormattingEventHandler(this._grid_ViewCellFormatting);

this._grid.CommandCellClick += new Telerik.WinControls.UI.CommandCellClickEventHandler(this._grid_CommandCellClick);

//

// Form1

//

this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);

this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;

this.ClientSize = new System.Drawing.Size(284, 262);

this.Controls.Add(this._grid);

this.Name = "Form1";

this.Text = "Form1";

this.Load += new System.EventHandler(this.Form1_Load);

((System.ComponentModel.ISupportInitialize)(this._grid)).EndInit();

this.ResumeLayout(false);

}

#endregion

private Telerik.WinControls.UI.RadGridView _grid;

}

GridView

answered on 06 Jan 2012

4 answers

256 views

capture DoubleClick or Click event

VB.NET
.NET 3.5

RadControls for WinForms Q1 2009 SP1
MS Visual Studio 2008

I have been able to do just about everything else I need to do in the Treeview control, except capturing click events in my form. The tree is generated from SQL tables and otherwise appears fine. Ultimately I am hoping to wire the tree nodes to files in the filesystem.
Following is the code to capture the DoubleClick event (copied from documentation):

Private

Sub RadTreeView1_DoubleClick(ByVal sender As Object, ByVal e As EventArgs)

Dim args As MouseEventArgs = TryCast(e, MouseEventArgs)

Dim clickedNode As RadTreeNode = RadTreeView1.GetNodeAt(args.X, args.Y)

If clickedNode <> Nothing Then

MessageBox.Show("Node Text: " + clickedNode.Text + " Node Value: " + clickedNode.Tag)

End If

End Sub

The only other block of code in my form is my form load which loads the tree with data from the database.

I have 2 questions/problems:
1. Visual Studio is complaining about the IF statement: "Operator '<>' is not defined for types 'Telerik.WinControls.UI.RadTreeNode' and 'Telerik.WinControls.UI.RadTreeNode'. What does this mean?
2. It appears the DoubleClick event isn't being captured since nothing happens when I double click a node. Is the IF statement error related to this? What am I missing? For my testing I simply commented out the 'If...' and 'End If' lines.

Thanks in advance for any guidance you can provide.
Matt

Treeview

answered on 05 Jan 2012

9 answers

85 views

IGridFilterPopup

I'm trying to find an example of creating a custom grid filter popup. Anybody have one yet?

GridView

answered on 04 Jan 2012

2 answers

236 views

GridViewCommandColumn Edit Button Outside Of CommandCellClick

Hello

I clearly understand how to use the event associated with a CommandColumn click event (GridView_CommandCellClick). What I would like to do is gain access to the button's properties (GridViewCommandColumn Button) from another method. For example, if i have this method: "private void ChangeButtonText(GridViewRowInfo rowIndex, String buttonText)". This method is not associated with the click event of a CommandButton but this method needs to access CommandButton's properties for the given rowIndex and change the CommandButton.Text property equal to buttonText.

I am using VS 2010, C# and Q2 update.

Any help would be appreciated.

Thank You

GridView

answered on 04 Jan 2012

1 answer

97 views

Column Groups view and invisible columns

Hi,

There seems to be a small layout bug when I have invisible columns in my grid with a Column Groups view. Looks like the invisible columns are still taking up a few pixels, causing borders to not line up correctly between neighboring groups. If you have enough invisible columns, you can see double borders where one group ends and another group starts. Please view the attached screen grab to see what I'm talking about.

GridView

answered on 04 Jan 2012

1 answer

62 views

Update the cab enabling kit for Q3 2011

Please update the cab enabling kit for 2011 Q3. most of the controls are not supported(tabstrip,toolstrip).
Change it for pageview,commandbar instead of tabstrip and toolbar.

CAB Enabling Kit

answered on 03 Jan 2012

1 answer

126 views

BrowserColumn in 2011Q3

Hi,
Since I can't resolve the Enter key event of my Custom column with a TextBox and a Button, I decide to use the BrowserColumn of GridView of 2011Q3 now. I have a test project using the BrowserColumn in 2011Q3, I want to popup my own Form when I click the button of the BrowserColumn. How can I implement?

GridView

answered on 03 Jan 2012

9 answers

192 views

Delayed load time of child nodes

Hey all,

I have a very simple radtreeview structure. I basically have 3 root nodes and each node has 3 children. Every time I expand the tree node, there's a delay loading the child nodes. The delay isn't huge but it's a very noticeable delay compared to the original TreeView control. I suspect this has to do with the way the node appears (the turn on looking way). Is there a way to change that behavior so it's identical to the Windows TreeView control ?

Thanks

Treeview

answered on 02 Jan 2012

1 answer

574 views

Hiding Customize Options

I was looking through the forum for a solution on how to hide the customize options for each CommandBarStripElement as well as the main RadCommandBar. We don't want our users to be able to add or remove any buttons we have added. If there is a better way than cancelling the drop down event please let me know. Thank you.

CommandBar

answered on 30 Dec 2011