This is the first time I am working with drag and drop. So I have a form with a listbox and nothing else. I would like to be able to drag and drop files from desktop or windows explorer into my listbox. This is my code. What is missing?
Form:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void listBox1_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.FileDrop))
e.Effect = DragDropEffects.All;
else
e.Effect = DragDropEffects.None;
}
private void listBox1_DragDrop(object sender, DragEventArgs e)
{
string[] s = (string[])e.Data.GetData(DataFormats.FileDrop, false);
int i;
for (i = 0; i < s.Length; i++)
listBox1.Items.Add(s[i]);
}
}
Form1.Designer.cs: (InitializeComponents)
private void InitializeComponent()
{
this.listBox1 = new System.Windows.Forms.ListBox();
this.SuspendLayout();
//
// listBox1
//
this.listBox1.AllowDrop = true;
this.listBox1.FormattingEnabled = true;
this.listBox1.Location = new System.Drawing.Point(30, 23);
this.listBox1.Name = "listBox1";
this.listBox1.Size = new System.Drawing.Size(376, 238);
this.listBox1.TabIndex = 0;
this.listBox1.DragDrop += new System.Windows.Forms.DragEventHandler(this.listBox1_DragDrop);
this.listBox1.DragEnter += new System.Windows.Forms.DragEventHandler(this.listBox1_DragEnter);
this.listBox1.DragOver += new System.Windows.Forms.DragEventHandler(this.listBox1_DragOver);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(438, 366);
this.Controls.Add(this.listBox1);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
I make this and i think this will be OK.And no need DragOver.
private void listBox_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.FileDrop))
e.Effect = DragDropEffects.All;
else
e.Effect = DragDropEffects.None;
}
private void listBox_DragDrop(object sender, DragEventArgs e)
{
if (listBox.Items.Count != 0)
{
listBox.Items.Clear();
}
string[] s = (string[])e.Data.GetData(DataFormats.FileDrop, false);
int i;
for (i = 0; i < s.Length; i++)
listBox.Items.Add(Path.GetFileName(s[i]));
}
Related
I have a simple winform application which allows users to drag controls to a tablelayoutpanel. But after some testing and trying to drag controls to a specific index row, I found out it doesn't work, not even with a hardcoded index number.
With the provided code example, I'm trying to add a textbox to row index 2, but when I drag content from the listbox to the tablelayoutpanel, it just adds the textbox in 'random' places as seen in the screenshot below
I expect the existing textboxes to shift down and make place for the textbox that's being added, as far as I understand from this: https://social.msdn.microsoft.com/Forums/windows/en-US/e4312cd8-6031-4a5c-92bf-e8adb1941fe5/insert-row-at-particular-position-in-table-layout-panel?forum=winforms.
Am I doing something wrong?
Designer code:
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.listBox1 = new System.Windows.Forms.ListBox();
this.tableLayoutPanel1 = new System.Windows.Forms.TableLayoutPanel();
this.SuspendLayout();
//
// listBox1
//
this.listBox1.FormattingEnabled = true;
this.listBox1.Location = new System.Drawing.Point(367, 12);
this.listBox1.Name = "listBox1";
this.listBox1.Size = new System.Drawing.Size(190, 407);
this.listBox1.TabIndex = 0;
this.listBox1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.listBox1_MouseDown);
//
// tableLayoutPanel1
//
this.tableLayoutPanel1.ColumnCount = 1;
this.tableLayoutPanel1.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 50F));
this.tableLayoutPanel1.Location = new System.Drawing.Point(13, 12);
this.tableLayoutPanel1.Name = "tableLayoutPanel1";
this.tableLayoutPanel1.RowCount = 1;
this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 50F));
this.tableLayoutPanel1.Size = new System.Drawing.Size(332, 407);
this.tableLayoutPanel1.TabIndex = 1;
this.tableLayoutPanel1.DragDrop += new System.Windows.Forms.DragEventHandler(this.tableLayoutPanel1_DragDrop);
this.tableLayoutPanel1.DragEnter += new System.Windows.Forms.DragEventHandler(this.tableLayoutPanel1_DragEnter);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(569, 431);
this.Controls.Add(this.tableLayoutPanel1);
this.Controls.Add(this.listBox1);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.ListBox listBox1;
private System.Windows.Forms.TableLayoutPanel tableLayoutPanel1;
}
Form code:
public partial class Form1 : Form
{
private int tempInt = 0;
public Form1()
{
InitializeComponent();
listBox1.Items.AddRange(new object[] { "test" });
tableLayoutPanel1.AllowDrop = true;
tableLayoutPanel1.GrowStyle = TableLayoutPanelGrowStyle.AddRows;
tableLayoutPanel1.AutoScroll = true;
tableLayoutPanel1.RowCount = 3;
}
private void listBox1_MouseDown(object sender, MouseEventArgs e)
{
tempInt++;
DoDragDrop("test" + tempInt, DragDropEffects.Copy);
}
private void tableLayoutPanel1_DragEnter(object sender, DragEventArgs e)
{
e.Effect = DragDropEffects.Copy;
}
private void tableLayoutPanel1_DragDrop(object sender, DragEventArgs e)
{
string text = e.Data.GetData(typeof(String)) as string;
TextBox tb = new TextBox();
tb.Dock = DockStyle.Fill;
tb.Text = text;
// I want to add the textbox to the second row
tableLayoutPanel1.Controls.Add(tb, 0, 2);
tableLayoutPanel1.SetRow(tb, 2);
}
}
EDIT:
Added code based as DonBoitnott's suggested
private void tableLayoutPanel1_DragDrop(object sender, DragEventArgs e)
{
string text = e.Data.GetData(typeof(String)) as string;
TextBox tb = new TextBox();
tb.Dock = DockStyle.Fill;
tb.Text = text;
tableLayoutPanel1.RowStyles.Add(new RowStyle(SizeType.AutoSize));
for (int i = 0; i < tableLayoutPanel1.Controls.Count; i++)
{
int pos = tableLayoutPanel1.GetRow(tableLayoutPanel1.Controls[i]);
if (pos > 1)
{
tableLayoutPanel1.SetRow(tableLayoutPanel1.Controls[i], pos + 1);
}
}
tableLayoutPanel1.Controls.Add(tb, 0, 2);
}
Give this modified form class a try, I've made a few changes throughout:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
listBox1.Items.AddRange(new Object[] { "TextBox" });
tableLayoutPanel1.AllowDrop = true;
tableLayoutPanel1.GrowStyle = TableLayoutPanelGrowStyle.AddRows;
tableLayoutPanel1.AutoScroll = true;
tableLayoutPanel1.RowStyles.Clear();
tableLayoutPanel1.ColumnStyles.Clear();
tableLayoutPanel1.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 100f));
}
private void listBox1_MouseDown(Object sender, MouseEventArgs e)
{
var count = tableLayoutPanel1.Controls.Count;
DoDragDrop($"test{count + 1}", DragDropEffects.Copy);
}
private void tableLayoutPanel1_DragEnter(Object sender, DragEventArgs e)
{
e.Effect = DragDropEffects.Copy;
}
private void tableLayoutPanel1_DragDrop(Object sender, DragEventArgs e)
{
var tb = new TextBox();
tb.Dock = DockStyle.Fill;
tb.Text = (e.Data.GetData(typeof(String)) as String);
var newRow = tableLayoutPanel1.RowStyles.Add(new RowStyle(SizeType.AutoSize));
var ctrl = tableLayoutPanel1.GetChildAtPoint(tableLayoutPanel1.PointToClient(new Point(e.X, e.Y)));
if (ctrl != null)
{
var pos = tableLayoutPanel1.GetRow(ctrl);
for (Int32 i = tableLayoutPanel1.RowStyles.Count - 2; i >= pos; i--)
{
var c = tableLayoutPanel1.GetControlFromPosition(0, i);
if (c != null)
tableLayoutPanel1.SetRow(c, i + 1);
}
tableLayoutPanel1.Controls.Add(tb, 0, pos);
}
else
tableLayoutPanel1.Controls.Add(tb, 0, newRow);
}
}
The basic steps are:
Did I drop onto an existing control? If so, determine where.
If so, work bottom to top, moving each control down a slot. You must avoid overlapping, two controls cannot occupy the same cell.
If so, insert the new control into the newly emptied slot at the drop point.
If not, simply add the control at the end.
I write a custom control.This control create a Form when double mouse double clicked.I also added other controls(button and label etc).But I create textbox1 and textbox2 outside of function.I write events of this controls but this didnt work.Guys I write textbox_press event.Because of this event I can only write digit or letter but I run this program and clicked on my control new form display but this events dont work
namespace Deneme
{
public partial class Direnc : Control
{
public Direnc()
{
InitializeComponent();
}
private string res_name;
private int res_value;
Form form = new Form();
TextBox textBox1 = new TextBox();
TextBox textBox2 = new TextBox();
protected override void OnDoubleClick(EventArgs e)
{
base.OnDoubleClick(e);
//
// label1
//
Label label1 = new Label();
AutoSize = true;
label1.Location = new System.Drawing.Point(27, 35);
label1.Name = "label1";
label1.Size = new System.Drawing.Size(27, 13);
label1.TabIndex = 0;
label1.Text = "İsmi";
//
// label2
//
Label label2 = new Label();
AutoSize = true;
label2.Location = new System.Drawing.Point(13, 89);
label2.Name = "label2";
label2.Size = new System.Drawing.Size(41, 13);
label2.TabIndex = 1;
label2.Text = "Değeri";
//
// textBox1
//
textBox1.Location = new System.Drawing.Point(58, 32);
textBox1.Name = "textBox1";
textBox1.Size = new System.Drawing.Size(100, 22);
textBox1.TabIndex = 2;
//
// textBox2
//
textBox2.Location = new System.Drawing.Point(58, 86);
textBox2.Name = "textBox2";
textBox2.Size = new System.Drawing.Size(100, 22);
textBox2.TabIndex = 3;
//
// button1
//
Button button1 = new Button();
button1.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
button1.Location = new System.Drawing.Point(64, 145);
button1.Name = "button1";
button1.Size = new System.Drawing.Size(75, 48);
button1.TabIndex = 4;
button1.Text = "Kaydet";
button1.UseVisualStyleBackColor = true;
//
// form
//
form.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
form.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
form.BackColor = System.Drawing.Color.RoyalBlue;
form.ClientSize = new System.Drawing.Size(176, 205);
form.Controls.Add(button1);
form.Controls.Add(textBox2);
form.Controls.Add(textBox1);
form.Controls.Add(label2);
form.Controls.Add(label1);
form.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
form.MaximizeBox = false;
form.MinimizeBox = false;
form.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
form.Text = "Direnç";
form.TopMost = true;
form.ResumeLayout(false);
form.PerformLayout();
form.ShowDialog();
button1.Click += new EventHandler(button1_Click);
textBox1.KeyPress += new KeyPressEventHandler(textBox1_KeyPress);
textBox2.KeyPress += new KeyPressEventHandler(textBox2_KeyPress);
}
void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
e.Handled = !char.IsLetter(e.KeyChar) && !char.IsControl(e.KeyChar)
&& !char.IsSeparator(e.KeyChar);
}
void textBox2_KeyPress(object sender, KeyPressEventArgs e)
{
if(char.IsLetter(e.KeyChar) && char.IsControl(e.KeyChar))
e.Handled = true;
}
void button1_Click(object sender, EventArgs e)
{
res_name = textBox1.Text;
res_value = Convert.ToInt32(textBox2.Text);
MessageBox.Show(res_name + res_value.ToString());
}
}
Based on your description, I think this is what you want. If not you need to give us more info on what doesn't work.
I think the problem you are facing is that your event are assigned AFTER you call ShowDialog(), which is modal. This means that the method will block the current thread and any code after it will not execute until the form is closed. The solution below was not tested but should hopefully help you solve your issue. Also as I said above in my comment it is safer from a maintenance point of view for you to add an actual form to your project with all the required controls. Dynamic controls can have surprises when you least expect them.
protected override void OnDoubleClick(EventArgs e)
{
base.OnDoubleClick(e);
// The rest of you code here
// The rest of you code here
// The rest of you code here
button1.Click += delegate
{
res_name = textBox1.Text;
res_value = Convert.ToInt32(textBox2.Text);
MessageBox.Show(res_name + res_value.ToString());
};
textBox1.KeyPress += delegate(object sender, KeyPressEventArgs ev)
{
ev.Handled = !char.IsLetter(ev.KeyChar) && !char.IsControl(ev.KeyChar) && !char.IsSeparator(ev.KeyChar);
};
textBox2.KeyPress += delegate(object sender, KeyPressEventArgs ev)
{
if (char.IsLetter(e.KeyChar) && char.IsControl(e.KeyChar))
e.Handled = true;
};
form.ShowDialog(); // <----------- MODAL call, all the code is added BEFORE it
}
i want print the content of panel with RadPrintPreview of telerik , but when i declare RadPrintDocument i cant associat this later with panel !
this is my code :
private void doc_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
Bitmap bmp = new Bitmap(radPanel2.Width, radPanel2.Height, radPanel2.CreateGraphics());
radPanel2.DrawToBitmap(bmp, new Rectangle(0, 0, radPanel2.Width, radPanel2.Height));
RectangleF bounds = e.PageSettings.PrintableArea;
e.Graphics.DrawImage(bmp, bounds.Left, bounds.Top, radPanel2.Width, radPanel2.Height);
}
private void btn_Imression_Click(object sender, EventArgs e)
{
System.Drawing.Printing.PrintDocument doc = new System.Drawing.Printing.PrintDocument();
doc.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(doc_PrintPage);
RadPrintPreviewDialog PrintSettings = new RadPrintPreviewDialog();
PrintSettings.Document = doc;
PageSettings pgsetting = new PageSettings();
if (PrintSettings.ShowDialog() == DialogResult.OK)
doc.Print();
}
and thank's for help :)
In order to print Telerik UI for WinForms control, you should use the embedded in the framework functionality, namely RadPrintDocument, which allows you to print any object implementing the IPrintable interface. Here is how this can be done for RadPanel:
RadPanel panel = new RadPanel();
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
InitializeComponent();
panel.Dock = DockStyle.Fill;
panel.BackColor = Color.Red;
panel.Parent = this;
RadButton b = new RadButton();
b.Text = "button1";
panel.Controls.Add(b);
RadButton b2 = new RadButton();
b2.Text = "button1";
b2.Location = new Point(400, 400);
panel.Controls.Add(b2);
}
private class PanelPrinter : IPrintable
{
private RadPanel panel;
public PanelPrinter(RadPanel panel)
{
this.panel = panel;
}
public int BeginPrint(RadPrintDocument sender, PrintEventArgs args)
{
return 1;
}
public bool EndPrint(RadPrintDocument sender, PrintEventArgs args)
{
return false;
}
public Form GetSettingsDialog(RadPrintDocument document)
{
return null;
}
public bool PrintPage(int pageNumber, RadPrintDocument sender, PrintPageEventArgs args)
{
float scale = Math.Min((float)args.MarginBounds.Width / panel.Size.Width, (float)args.MarginBounds.Height / panel.Size.Height);
Bitmap panelBmp = new Bitmap(this.panel.Width, this.panel.Height);
this.panel.DrawToBitmap(panelBmp, this.panel.Bounds);
Matrix saveMatrix = args.Graphics.Transform;
args.Graphics.ScaleTransform(scale, scale);
args.Graphics.DrawImage(panelBmp, args.MarginBounds.Location);
args.Graphics.Transform = saveMatrix;
return false;
}
}
private void radButton1_Click(object sender, EventArgs e)
{
RadPrintDocument document = new RadPrintDocument();
document.AssociatedObject = new PanelPrinter(this.panel);
RadPrintPreviewDialog dialog = new RadPrintPreviewDialog(document);
dialog.ShowDialog();
}
I'm using a C# form and I essentially want to update a label for every second of the current time. Obviously the UI thread is getting in the way and stuff so I resorted to background workers and I'm sitting here scratching my head trying to update my label every second. I've tried using a while loop in several locations but it won't work. I'm obviously doing something wrong... Any solutions?
Code:
MainForm.Designer.cs:
using System;
namespace alarmClock
{
partial class MainForm
{
System.ComponentModel.IContainer components = null;
protected override void Dispose(bool disposing)
{
if (disposing) {
if (components != null) {
components.Dispose();
}
}
base.Dispose(disposing);
}
public static DateTime now = DateTime.Now;
public static string time = now.ToLongTimeString();
public void setRealHour() {
hour.Text = time[0].ToString() + time[1].ToString();
}
public void setRealMinute() {
minute.Text = time[3].ToString() + time[4].ToString();
}
public void setRealSecond() {
second.Text = time[6].ToString() + time[7].ToString();
}
public void setHourTime() {
setHour.Text = MainForm.setH.ToString();
if(MainForm.setH < 10) {
setHour.Text = "0" + MainForm.setH.ToString();
}
if(MainForm.setH > 24) {
MainForm.setH=0;
setHour.Text = "0" + MainForm.setH.ToString();
}
}
public void setMinuteTime() {
setMinute.Text = MainForm.setM.ToString();
if(MainForm.setM < 10) {
setMinute.Text = "0" + MainForm.setM.ToString();
}
if(MainForm.setM > 60) {
MainForm.setM=0;
setMinute.Text = "0" + MainForm.setM.ToString();
}
}
public void setSecondTime() {
setSecond.Text = MainForm.setS.ToString();
if(MainForm.setS < 10) {
setSecond.Text = "0" + MainForm.setS.ToString();
}
if(MainForm.setS > 60) {
MainForm.setS=0;
setSecond.Text = "0" + MainForm.setS.ToString();
}
}
private void InitializeComponent()
{
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(MainForm));
this.tableLayoutPanel1 = new System.Windows.Forms.TableLayoutPanel();
this.minute = new System.Windows.Forms.Label();
this.hour = new System.Windows.Forms.Label();
this.second = new System.Windows.Forms.Label();
this.checkboxTime = new System.Windows.Forms.CheckedListBox();
this.delTime = new System.Windows.Forms.Button();
this.tableLayoutPanel2 = new System.Windows.Forms.TableLayoutPanel();
this.tableLayoutPanel3 = new System.Windows.Forms.TableLayoutPanel();
this.setHour = new System.Windows.Forms.Label();
this.setMinute = new System.Windows.Forms.Label();
this.setSecond = new System.Windows.Forms.Label();
this.tableLayoutPanel4 = new System.Windows.Forms.TableLayoutPanel();
this.subHour = new System.Windows.Forms.Button();
this.addHour = new System.Windows.Forms.Button();
this.subMin = new System.Windows.Forms.Button();
this.addMin = new System.Windows.Forms.Button();
this.subSec = new System.Windows.Forms.Button();
this.addSec = new System.Windows.Forms.Button();
this.setTime = new System.Windows.Forms.GroupBox();
this.addTime = new System.Windows.Forms.Button();
this.bgwM = new System.ComponentModel.BackgroundWorker();
this.bgwS = new System.ComponentModel.BackgroundWorker();
this.bgwH = new System.ComponentModel.BackgroundWorker();
this.tableLayoutPanel1.SuspendLayout();
this.tableLayoutPanel2.SuspendLayout();
this.tableLayoutPanel3.SuspendLayout();
this.tableLayoutPanel4.SuspendLayout();
this.setTime.SuspendLayout();
this.SuspendLayout();
//
// tableLayoutPanel1
//
resources.ApplyResources(this.tableLayoutPanel1, "tableLayoutPanel1");
this.tableLayoutPanel1.Controls.Add(this.minute, 1, 0);
this.tableLayoutPanel1.Controls.Add(this.hour, 0, 0);
this.tableLayoutPanel1.Controls.Add(this.second, 2, 0);
this.tableLayoutPanel1.Name = "tableLayoutPanel1";
//
// minute
//
resources.ApplyResources(this.minute, "minute");
this.minute.ForeColor = System.Drawing.Color.Black;
this.minute.Name = "minute";
//
// hour
//
resources.ApplyResources(this.hour, "hour");
this.hour.ForeColor = System.Drawing.Color.Black;
this.hour.Name = "hour";
//
// second
//
resources.ApplyResources(this.second, "second");
this.second.ForeColor = System.Drawing.Color.Black;
this.second.Name = "second";
//
// checkboxTime
//
this.checkboxTime.BackColor = System.Drawing.Color.Silver;
resources.ApplyResources(this.checkboxTime, "checkboxTime");
this.checkboxTime.ForeColor = System.Drawing.Color.Black;
this.checkboxTime.FormattingEnabled = true;
this.checkboxTime.Items.AddRange(new object[] {
resources.GetString("checkboxTime.Items"),
resources.GetString("checkboxTime.Items1")});
this.checkboxTime.Name = "checkboxTime";
this.checkboxTime.SelectedIndexChanged += new System.EventHandler(this.CheckboxTimeSelectedIndexChanged);
//
// delTime
//
resources.ApplyResources(this.delTime, "delTime");
this.delTime.Name = "delTime";
this.delTime.UseVisualStyleBackColor = true;
this.delTime.Click += new System.EventHandler(this.DelTimeClick);
//
// tableLayoutPanel2
//
resources.ApplyResources(this.tableLayoutPanel2, "tableLayoutPanel2");
this.tableLayoutPanel2.Controls.Add(this.tableLayoutPanel3, 0, 1);
this.tableLayoutPanel2.Controls.Add(this.tableLayoutPanel4, 0, 0);
this.tableLayoutPanel2.Name = "tableLayoutPanel2";
//
// tableLayoutPanel3
//
resources.ApplyResources(this.tableLayoutPanel3, "tableLayoutPanel3");
this.tableLayoutPanel3.Controls.Add(this.setHour, 0, 0);
this.tableLayoutPanel3.Controls.Add(this.setMinute, 1, 0);
this.tableLayoutPanel3.Controls.Add(this.setSecond, 2, 0);
this.tableLayoutPanel3.Name = "tableLayoutPanel3";
//
// setHour
//
resources.ApplyResources(this.setHour, "setHour");
this.setHour.ForeColor = System.Drawing.Color.Black;
this.setHour.Name = "setHour";
//
// setMinute
//
resources.ApplyResources(this.setMinute, "setMinute");
this.setMinute.ForeColor = System.Drawing.Color.Black;
this.setMinute.Name = "setMinute";
//
// setSecond
//
resources.ApplyResources(this.setSecond, "setSecond");
this.setSecond.ForeColor = System.Drawing.Color.Black;
this.setSecond.Name = "setSecond";
//
// tableLayoutPanel4
//
resources.ApplyResources(this.tableLayoutPanel4, "tableLayoutPanel4");
this.tableLayoutPanel4.Controls.Add(this.subHour, 0, 0);
this.tableLayoutPanel4.Controls.Add(this.addHour, 1, 0);
this.tableLayoutPanel4.Controls.Add(this.subMin, 2, 0);
this.tableLayoutPanel4.Controls.Add(this.addMin, 3, 0);
this.tableLayoutPanel4.Controls.Add(this.subSec, 4, 0);
this.tableLayoutPanel4.Controls.Add(this.addSec, 5, 0);
this.tableLayoutPanel4.Name = "tableLayoutPanel4";
//
// subHour
//
resources.ApplyResources(this.subHour, "subHour");
this.subHour.Name = "subHour";
this.subHour.UseVisualStyleBackColor = true;
this.subHour.Click += new System.EventHandler(this.SubHourClick);
//
// addHour
//
resources.ApplyResources(this.addHour, "addHour");
this.addHour.Name = "addHour";
this.addHour.UseVisualStyleBackColor = true;
this.addHour.Click += new System.EventHandler(this.AddHourClick);
//
// subMin
//
resources.ApplyResources(this.subMin, "subMin");
this.subMin.Name = "subMin";
this.subMin.UseVisualStyleBackColor = true;
this.subMin.Click += new System.EventHandler(this.SubMinClick);
//
// addMin
//
resources.ApplyResources(this.addMin, "addMin");
this.addMin.Name = "addMin";
this.addMin.UseVisualStyleBackColor = true;
this.addMin.Click += new System.EventHandler(this.AddMinClick);
//
// subSec
//
resources.ApplyResources(this.subSec, "subSec");
this.subSec.Name = "subSec";
this.subSec.UseVisualStyleBackColor = true;
this.subSec.Click += new System.EventHandler(this.SubSecClick);
//
// addSec
//
resources.ApplyResources(this.addSec, "addSec");
this.addSec.Name = "addSec";
this.addSec.UseVisualStyleBackColor = true;
this.addSec.Click += new System.EventHandler(this.AddSecClick);
//
// setTime
//
resources.ApplyResources(this.setTime, "setTime");
this.setTime.BackColor = System.Drawing.Color.Silver;
this.setTime.Controls.Add(this.addTime);
this.setTime.Controls.Add(this.tableLayoutPanel2);
this.setTime.Name = "setTime";
this.setTime.TabStop = false;
//
// addTime
//
resources.ApplyResources(this.addTime, "addTime");
this.addTime.Name = "addTime";
this.addTime.UseVisualStyleBackColor = true;
this.addTime.Click += new System.EventHandler(this.AddTimeClick);
//
// bgwM
//
this.bgwM.DoWork += new System.ComponentModel.DoWorkEventHandler(this.BgwMDoWork);
//
// bgwS
//
this.bgwS.DoWork += new System.ComponentModel.DoWorkEventHandler(this.BgwSDoWork);
//
// bgwH
//
this.bgwH.DoWork += new System.ComponentModel.DoWorkEventHandler(this.BgwHDoWork);
//
// MainForm
//
resources.ApplyResources(this, "$this");
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.BackColor = System.Drawing.Color.DarkGray;
this.Controls.Add(this.setTime);
this.Controls.Add(this.delTime);
this.Controls.Add(this.checkboxTime);
this.Controls.Add(this.tableLayoutPanel1);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
this.Name = "MainForm";
this.tableLayoutPanel1.ResumeLayout(false);
this.tableLayoutPanel1.PerformLayout();
this.tableLayoutPanel2.ResumeLayout(false);
this.tableLayoutPanel2.PerformLayout();
this.tableLayoutPanel3.ResumeLayout(false);
this.tableLayoutPanel3.PerformLayout();
this.tableLayoutPanel4.ResumeLayout(false);
this.setTime.ResumeLayout(false);
this.setTime.PerformLayout();
this.ResumeLayout(false);
this.PerformLayout();
}
private System.ComponentModel.BackgroundWorker bgwH;
private System.ComponentModel.BackgroundWorker bgwS;
private System.ComponentModel.BackgroundWorker bgwM;
System.Windows.Forms.Button addTime;
System.Windows.Forms.GroupBox setTime;
System.Windows.Forms.Button addSec;
System.Windows.Forms.Button subSec;
System.Windows.Forms.Button addMin;
System.Windows.Forms.Button subMin;
System.Windows.Forms.Button addHour;
System.Windows.Forms.TableLayoutPanel tableLayoutPanel4;
System.Windows.Forms.Label setSecond;
System.Windows.Forms.Label setMinute;
System.Windows.Forms.Label setHour;
System.Windows.Forms.TableLayoutPanel tableLayoutPanel3;
System.Windows.Forms.Button subHour;
System.Windows.Forms.TableLayoutPanel tableLayoutPanel2;
System.Windows.Forms.Button delTime;
System.Windows.Forms.CheckedListBox checkboxTime;
System.Windows.Forms.TableLayoutPanel tableLayoutPanel1;
System.Windows.Forms.Label second;
System.Windows.Forms.Label hour;
System.Windows.Forms.Label minute;
void BgwHDoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
{
setRealHour();
}
void BgwMDoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
{
setRealMinute();
}
void BgwSDoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
{
setRealSecond();
}
}
}
MainForm.cs:
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
namespace alarmClock
{
public partial class MainForm : Form
{
public static int setH = 0;
public static int setM = 0;
public static int setS = 0;
public MainForm()
{
InitializeComponent();
bgwH.RunWorkerAsync();
bgwM.RunWorkerAsync();
bgwS.RunWorkerAsync();
}
void DelTimeClick(object sender, EventArgs e)
{
}
void SubHourClick(object sender, EventArgs e)
{
setH--;
setHourTime();
}
void AddHourClick(object sender, EventArgs e)
{
setH++;
setHourTime();
}
void SubMinClick(object sender, EventArgs e)
{
setM--;
setMinuteTime();
}
void AddMinClick(object sender, EventArgs e)
{
setM++;
setMinuteTime();
}
void SubSecClick(object sender, EventArgs e)
{
setS--;
setSecondTime();
}
void AddSecClick(object sender, EventArgs e)
{
setS++;
setSecondTime();
}
void AddTimeClick(object sender, EventArgs e)
{
}
void CheckboxTimeSelectedIndexChanged(object sender, EventArgs e)
{
}
}
}
As Jeremy noted in the comments, a Timer would be a better choice.
For completeness, if you still wanted to use a BackgroundWorker, due to some other reason, you will need to use BackgroundWorker.ReportProgress() method. Any UI work must be done on the main UI thread. Using a BackgroundWorker you need to use the Reporting event handler to get your callback back on the main Thread.
You need to ensure BackgroundWorker.WorkerReportsProgress is set to TRUE. This is not by default. Then move your label set method into an Event Handler on ProgressChanged
I have a problem with DragDrop.
private void Form0_Load(object sender, EventArgs e)
{
PictureBox panel1 = new PictureBox();
PictureBox panel2 = new PictureBox();
mainPanel.Dock = DockStyle.Fill;
this.Controls.Add(mainPanel);
panel1.Location = new Point(10, 10);
panel1.Size = new System.Drawing.Size(500, 300);
panel1.BorderStyle = BorderStyle.FixedSingle;
Button b2 = new Button();
b2.Location = new Point(10, 10);
panel2.Controls.Add(b2);
panel2.Location = new Point(10, 10);
panel2.Size = new System.Drawing.Size(200, 100);
panel2.BorderStyle = BorderStyle.FixedSingle;
foreach (Control c in panel1.Controls)
{
c.MouseDown += new MouseEventHandler(control_MouseDown);
c.MouseMove += new MouseEventHandler(control_MouseMove);
c.MouseUp += new MouseEventHandler(control_MouseUp);
c.AllowDrop = true;
}
panel1.AllowDrop = true;
panel1.DragEnter += new DragEventHandler(container_DragEnter);
panel1.DragDrop += new DragEventHandler(container_DragDrop);
panel1.DragOver += new DragEventHandler(container_DragOver);
foreach (Control c in panel2.Controls)
{
c.MouseDown += new MouseEventHandler(control_MouseDown);
c.MouseMove += new MouseEventHandler(control_MouseMove);
c.MouseUp += new MouseEventHandler(control_MouseUp);
c.AllowDrop = true;
}
panel2.AllowDrop = true;
panel2.DragEnter += new DragEventHandler(container_DragEnter);
panel2.DragDrop += new DragEventHandler(container_DragDrop);
panel2.DragOver += new DragEventHandler(container_DragOver);
mainPanel.Controls.Add(panel1);
mainPanel.Controls.Add(panel2);
mainPanel.Controls.Add(pb);
}
private void control_MouseDown(object sender, MouseEventArgs e)
{
Control c = sender as Control;
isDragging = true;
clickOffsetX = e.X;
clickOffsetY = e.Y;
}
private void control_MouseMove(object sender, MouseEventArgs e)
{
Control c = sender as Control;
if (isDragging == true)
{
c.Left = e.X + c.Left - clickOffsetX;
c.Top = e.Y + c.Top - clickOffsetY;
if (c.Location.X + clickOffsetX > c.Parent.Width ||
c.Location.Y + clickOffsetY > c.Parent.Height ||
c.Location.X + clickOffsetX < 0 ||
c.Location.Y + clickOffsetY < 0)
c.DoDragDrop(c, DragDropEffects.Move);
}
}
private void control_MouseUp(object sender, MouseEventArgs e)
{
isDragging = false;
}
void container_DragOver(object sender, DragEventArgs e)
{
e.Effect = DragDropEffects.Move;
}
private void container_DragEnter(object sender, DragEventArgs e)
{
//e.Effect = DragDropEffects.Move;
//if (e.Data.GetDataPresent(typeof(Bitmap)))
//{
// e.Effect = DragDropEffects.Copy;
//}
//else
//{
// e.Effect = DragDropEffects.None;
//}
}
private void container_DragDrop(object sender, DragEventArgs e)
{
Control c = e.Data.GetData(e.Data.GetFormats()[0]) as Control;
PictureBox p = sender as PictureBox;
mycontrol = c;
isDragging = false;
if (c != null)
{
c.Location = p.PointToClient(new Point(e.X, e.Y));
p.Controls.Add(c);
}
}
This is a working example. But I can't do drop Controls from parent to child control. What is a magic? How to drop control to another control (from panel1 to panel2 in my example).
There are some answers here in SO, which may help you:
See this Move controls when Drag and drop on panel in C#
this is a complete example on how to host the Form Designer:
Tailor Your Application by Building a Custom Forms Designer with .NET
Check this one also for simple lable drag drop:
Basic drag and drop in WinForms