Questions on UI for WinForms Forum

7 answers

1.7K+ views

How can focus to custom cell element in CellBeginEdit event?

Hi everyone

I put a RadGridView in Form with enabled its edit mode (AllowEditRow = true), and has "id" and "name" columns, and three rows of data. Also I created a custom user control that has a TextBox and a Button (named it ccTest). Then I choose a cell from "name" column and any row at run time. Now I start to type letters from keyboard. In this case, I bring up the custom user control.

The problem is: The typed letters don't show in custom user control, because it's TextBox not focused yet. Therefore I must click one more time to focus it, before start type letters.

Question is: How can I focus the TextBox of custom user control when it appear from CellBeginEdit event?

Microsoft Visual Studio 2017 (C# language) installed on Windows 10 - Telerik WinForms 2017 R3 SP1 (2017.3.1017.40).

-------------------------------------------

ccTest.Designer.cs:

namespace TestGridFocus

{

partial class ccTest

{

/// <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 Component 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.textBox1 = new System.Windows.Forms.TextBox();

this.button1 = new System.Windows.Forms.Button();

this.SuspendLayout();

//

// textBox1

//

this.textBox1.Dock = System.Windows.Forms.DockStyle.Fill;

this.textBox1.Location = new System.Drawing.Point(0, 0);

this.textBox1.Multiline = true;

this.textBox1.Name = "textBox1";

this.textBox1.Size = new System.Drawing.Size(92, 20);

this.textBox1.TabIndex = 0;

//

// button1

//

this.button1.Dock = System.Windows.Forms.DockStyle.Right;

this.button1.Location = new System.Drawing.Point(92, 0);

this.button1.Name = "button1";

this.button1.Size = new System.Drawing.Size(28, 20);

this.button1.TabIndex = 1;

this.button1.Text = "?";

this.button1.UseVisualStyleBackColor = true;

//

// ccTest

//

this.Controls.Add(this.textBox1);

this.Controls.Add(this.button1);

this.Name = "ccTest";

this.Size = new System.Drawing.Size(120, 20);

this.ResumeLayout(false);

this.PerformLayout();

}

#endregion

private System.Windows.Forms.TextBox textBox1;

private System.Windows.Forms.Button button1;

}

ccTest.cs:

using System.Windows.Forms;

namespace TestGridFocus

{

public partial class ccTest : UserControl

{

public ccTest()

{

InitializeComponent();

}

public string Value

{

get

{

return textBox1.Text;

}

set

{

textBox1.Text = value;

}

Form1.Designer.cs:

namespace TestGridFocus

{

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()

{

Telerik.WinControls.UI.GridViewDecimalColumn gridViewDecimalColumn1 = new Telerik.WinControls.UI.GridViewDecimalColumn();

Telerik.WinControls.UI.GridViewTextBoxColumn gridViewTextBoxColumn1 = new Telerik.WinControls.UI.GridViewTextBoxColumn();

Telerik.WinControls.UI.GridViewDecimalColumn gridViewDecimalColumn2 = new Telerik.WinControls.UI.GridViewDecimalColumn();

Telerik.WinControls.UI.TableViewDefinition tableViewDefinition1 = new Telerik.WinControls.UI.TableViewDefinition();

this.radGridView1 = new Telerik.WinControls.UI.RadGridView();

((System.ComponentModel.ISupportInitialize)(this.radGridView1)).BeginInit();

((System.ComponentModel.ISupportInitialize)(this.radGridView1.MasterTemplate)).BeginInit();

this.SuspendLayout();

//

// radGridView1

//

this

.radGridView1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)

| System.Windows.Forms.AnchorStyles.Left)

| System.Windows.Forms.AnchorStyles.Right)));

this.radGridView1.Location = new System.Drawing.Point(12, 12);

//

this.radGridView1.MasterTemplate.AllowAddNewRow = false;

gridViewDecimalColumn1.FieldName = "id";

gridViewDecimalColumn1.HeaderText = "id";

gridViewDecimalColumn1.Name = "id";

gridViewDecimalColumn1.TextAlignment = System.Drawing.ContentAlignment.MiddleCenter;

gridViewTextBoxColumn1.FieldName = "name";

gridViewTextBoxColumn1.HeaderText = "name";

gridViewTextBoxColumn1.Name = "name";

gridViewTextBoxColumn1.Width = 150;

gridViewDecimalColumn2.FieldName = "age";

gridViewDecimalColumn2.HeaderText = "age";

gridViewDecimalColumn2.Name = "age";

gridViewDecimalColumn2.TextAlignment = System.Drawing.ContentAlignment.MiddleCenter;

this.radGridView1.MasterTemplate.Columns.AddRange(new Telerik.WinControls.UI.GridViewDataColumn[] {

gridViewDecimalColumn1,

gridViewTextBoxColumn1,

gridViewDecimalColumn2});

this.radGridView1.MasterTemplate.ViewDefinition = tableViewDefinition1;

this.radGridView1.Name = "radGridView1";

this.radGridView1.Size = new System.Drawing.Size(270, 237);

this.radGridView1.TabIndex = 0;

this.radGridView1.Text = "radGridView1";

this.radGridView1.CellBeginEdit += new Telerik.WinControls.UI.GridViewCellCancelEventHandler(this.radGridView1_CellBeginEdit);

this.radGridView1.CellEndEdit += new Telerik.WinControls.UI.GridViewCellEventHandler(this.radGridView1_CellEndEdit);

//

// Form1

//

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

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

this.ClientSize = new System.Drawing.Size(294, 261);

this.Controls.Add(this.radGridView1);

this.Name = "Form1";

this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;

this.Text = "Form1";

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

((System.ComponentModel.ISupportInitialize)(this.radGridView1.MasterTemplate)).EndInit();

((System.ComponentModel.ISupportInitialize)(this.radGridView1)).EndInit();

this.ResumeLayout(false);

}

#endregion

private Telerik.WinControls.UI.RadGridView radGridView1;

}

Form1.cs:

using System;

using System.Data;

using System.Windows.Forms;

using Telerik.WinControls;

namespace TestGridFocus

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private DataTable GetData()

{

DataTable dt = new DataTable();

dt.Columns.Add("id", typeof(int));

dt.Columns.Add("name", typeof(string));

dt.Rows.Add(1, "Jack");

dt.Rows.Add(2, "Joe");

dt.Rows.Add(3, "Bob");

dt.AcceptChanges();

return dt;

}

private void Form1_Load(object sender, EventArgs e)

{

radGridView1.DataSource = GetData();

}

ccTest test = new ccTest();

private void radGridView1_CellBeginEdit(object sender, Telerik.WinControls.UI.GridViewCellCancelEventArgs e)

{

if (e.Column == radGridView1.Columns["name"])

{

RadHostItem item = new RadHostItem(test);

test.Value = e.Row.Cells[e.ColumnIndex].Value.ToString();

radGridView1.CurrentCell.Children.Add(item);

item.HostedControl.Focus();

}

private void radGridView1_CellEndEdit(object sender, Telerik.WinControls.UI.GridViewCellEventArgs e)

{

if (e.Column == radGridView1.Columns["name"])

{

e.Row.Cells[e.ColumnIndex].Value = test.Value;

radGridView1.CurrentCell.Children.RemoveAt(0);

}

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RadBradCrumb seems to be quiet incomplete/unfinished

RadBradCrumb is a nice idea, but seems to be not really finished.

First, there is no documentation at all.

This little page gives a hint, this thing exists, not more.

https://docs.telerik.com/devtools/winforms/treeview/breadcrumb

Second, the splitbuttons and the dropdownItems are nice initialized and working,

but the DefaultItem of the SplitButton is not set.

You cannot click on the Button, und go up the hierarchie, the most basic function of a breadcrumb.

You always have this dropdown-things only.

Additionally, the RadBradCrumb is quiet a Closed thing, there are no events to subscribe, no virtual methods to override, just nothing.

I have found a workaround for this, which makes it work es expected, but this should be default functionality.

public class BreadCrumbHandler

{

private RadBreadCrumb crumb;

public BreadCrumbHandler(RadBreadCrumb crumb)

{

this.crumb = crumb;

// there is not other access to the DefaultItem of the SplitButtons in the BreadCrumb

var r = crumb.RootElement.Children.First() as RadBreadCrumbElement;

r.Items.ItemsChanged += BreadCrumb_ItemsChanged;

}

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{

if (operation == ItemsChangeOperation.Inserted)

{

RadSplitButtonElement btn = target as RadSplitButtonElement;

if (btn != null)

{

var defaultItem = new RadMenuItem(btn.Text);

defaultItem.Text = btn.Text;

defaultItem.Click += DefaultItem_Click;

btn.DefaultItem = defaultItem;

}

else if (operation == ItemsChangeOperation.Clearing)

{

foreach (var item in changed.OfType<RadSplitButtonElement>())

{

var menuItem = item.DefaultItem as RadMenuItem;

if (menuItem != null)

menuItem.Click -= DefaultItem_Click;

item.DefaultItem = null;

}

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{

RadSplitButtonElement btn = target as RadSplitButtonElement;

if (btn != null)

{

var menuItem = btn.DefaultItem as RadMenuItem;

if (menuItem != null)

menuItem.Click -= DefaultItem_Click;

btn.DefaultItem = null;

}

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{

var menuItem = (RadMenuItem)sender;

var currentNode = crumb.DefaultTreeView.SelectedNode;

while (currentNode != null)

{

if (currentNode.Text == menuItem.Text) // not really safe test, but works as long as Texts are distinct

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}

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Although I don't like the way it looks it has been tolerable, but now that I have created buttons with a custom shape I need to figure this out.

The dashed border still appears to be square, even though the button itself is not. I have attached an image that shows what I mean.

Can you please help me remove the dashed borders altogether? If not, I would at least like them to have the same shape as the button itself.

Thanks for your help.

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