home
Home
设置文本框只能输入数字和单精度字符串
/// <summary> /// 文本框只能输入数字型和单精度型的字符串. /// </summary> /// <param name="e">KeyPressEventArgs类</param> /// <param name="s">文本框的字符串</param> /// <param name="n">标识，判断是数字型还是单精度型</param> public static void Estimate_Key(KeyPressEventArgs e, string s, int n) { if (n == 0) //只能输入整型 if (!(e.KeyChar <= '9' && e.KeyChar >= '0') && e.KeyChar != '\r' && e.KeyChar != '\b') { e.Handled = true; //处理KeyPress事件 } if (n == 1) //可以输入整型或单精度型 { if ((!(e.KeyChar <= '9' && e.KeyChar >= '0')) && e.KeyChar != '.' && e.KeyChar != '\r' && e.KeyChar != '\b') { e.Handled = true; } else { if (e.KeyChar == '.') //如果输入“.” if (s == "") //当前文本框为空 e.Handled = true; //处理KeyPress事件 else { if (s.Length > 0) //当文本框不为空时 { if (s.IndexOf(".") > -1) //查找是否已输入过“.” e.Handled = true; //处理KeyPress事件 } } } } }
实现窗体的阴影效果
public partial class MyCustomForm : Form { private static Int32 CS_DROPSHADOW = 0x00020000; protected override CreateParams CreateParams { get { CreateParams parameters = base.CreateParams; parameters.ClassStyle |= CS_DROPSHADOW; return parameters; } } }
树节点的拖动移动操作
void InitTreeviewDragable() { this.treeView1.AllowDrop = true; this.treeView1.ItemDrag += new ItemDragEventHandler(treeView1_ItemDrag); this.treeView1.DragEnter += new DragEventHandler(treeView1_DragEnter); this.treeView1.DragDrop += new DragEventHandler(treeView1_DragDrop); } void treeView1_ItemDrag(object sender, ItemDragEventArgs e) { if (e.Button == MouseButtons.Left) { DoDragDrop(e.Item, DragDropEffects.Move); } } void treeView1_DragEnter(object sender, DragEventArgs e) { if (e.Data.GetDataPresent("System.Windows.Forms.TreeNode")) { e.Effect = DragDropEffects.Move; } else { e.Effect = DragDropEffects.None; } } void treeView1_DragDrop(object sender, DragEventArgs e) { //获得拖放中的节点 TreeNode moveNode = (TreeNode)e.Data.GetData("System.Windows.Forms.TreeNode"); //根据鼠标坐标确定要移动到的目标节点 Point pt; TreeNode targeNode; pt = ((TreeView)(sender)).PointToClient(new Point(e.X, e.Y)); targeNode = this.treeView1.GetNodeAt(pt); //如果目标节点无子节点则添加为同级节点,反之添加到下级节点的未端 TreeNode NewMoveNode = (TreeNode)moveNode.Clone(); if (targeNode.Nodes.Count == 0) { targeNode.Parent.Nodes.Insert(targeNode.Index, NewMoveNode); } else { targeNode.Nodes.Insert(targeNode.Nodes.Count, NewMoveNode); } //更新当前拖动的节点选择 this.treeView1.SelectedNode = NewMoveNode; //展开目标节点,便于显示拖放效果 targeNode.Expand(); //移除拖放的节点 moveNode.Remove(); }
树的鼠标操作
private void treeView1_MouseClick(object sender, MouseEventArgs e) { TreeNode node = this.treeView1.GetNodeAt(e.X, e.Y); if (node == null) return; if (this.treeView1.SelectedNode != node) { this.treeView1.SelectedNode = node; } if (e.Button == MouseButtons.Right) //右键单击 { switch (node.Level) { case 0: //this.contextMenuStrip1.Show(this.treeView1, e.X, e.Y); break; case 1: //this.contextMenuStrip1.Show(this.treeView1, e.X, e.Y); break; } } else //左键单击 { } }
确定和取消对话框
private void frmMain_FormClosing(object sender, FormClosingEventArgs e) { DialogResult dr = MessageBox.Show("确定要退出系统？", "系统消息", MessageBoxButtons.OKCancel); if (dr == System.Windows.Forms.DialogResult.Cancel) { e.Cancel = true; } this.m_systemDoc.Save(); }
home.txt · 最后更改: 2025/02/27 17:17 由 colin
评论
I'd suggest this article to everyone curious about this field. Clear descriptions of important ideas. 1xbet
I'd suggest this article to everyone curious about this field. Clear descriptions of important ideas. 1xbet
I completely concur with your main argument. Additionally, I would add that this aspect is equally important. 1xbet
I completely concur with your main argument. Additionally, I would add that this aspect is equally important. 1xbet
mostbet РФ Your fortune awaits! Enjoy exclusive bonuses! Stay tuned for special events! Subscribe to our newsletter for more! Play big! Tell your colleagues about us! Huge thanks for being part of us! Very professional! Our site is fantastic! Following your latest events! Liked and registered! You're an undisputed expert! Will share with on social media! Thank you for your assistance! Very rewarding experience! Your efforts always lead to wins! mostbet играть mostbet Кыргызстан mostbet mostbet kz
mostbet РФ Your fortune awaits! Enjoy exclusive bonuses! Stay tuned for special events! Subscribe to our newsletter for more! Play big! Tell your colleagues about us! Huge thanks for being part of us! Very professional! Our site is fantastic! Following your latest events! Liked and registered! You're an undisputed expert! Will share with on social media! Thank you for your assistance! Very rewarding experience! Your efforts always lead to wins! mostbet играть mostbet Кыргызстан mostbet mostbet kz
mostbet Azərbaycan Hit the jackpot with us! Unlock your fortune! Play with ease on our licensed platform! Don't miss out on huge jackpots! Win big! Share the joy with friends! Grateful for your loyalty! Simply fantastic! Your efforts always result in victories! Eagerly awaiting your upcoming tournaments! Bookmarked your content in my browser! You're the best! Telling everyone! Thanks for the rewarding experience! Very exciting promotion! Your skills always are rewarded! mostbet ru mostbet mostbet today mostbet Киргизия
mostbet Azərbaycan Hit the jackpot with us! Unlock your fortune! Play with ease on our licensed platform! Don't miss out on huge jackpots! Win big! Share the joy with friends! Grateful for your loyalty! Simply fantastic! Your efforts always result in victories! Eagerly awaiting your upcoming tournaments! Bookmarked your content in my browser! You're the best! Telling everyone! Thanks for the rewarding experience! Very exciting promotion! Your skills always are rewarded! mostbet ru mostbet mostbet today mostbet Киргизия
¡La fortuna te acompaña! No pierdas la oportunidad de disfrutar de apuestas seguros y entretenidas en 1Win. 1win
¡La fortuna te acompaña! No pierdas la oportunidad de disfrutar de apuestas seguros y entretenidas en 1Win. 1win
Discover Bet9ja: The Best Betting Experience in Nigeria!
bet9ja old mobile Looking for a simple betting experience? Access the Bet9ja Old Mobile version and experience fast loading times and easy navigation. Bet on soccer, casino games, and virtual races without the complexities of the new version. Start betting in minutes!
old bet9ja
Discover Bet9ja: The Best Betting Experience in Nigeria!
bet9ja old mobile Looking for a simple betting experience? Access the Bet9ja Old Mobile version and experience fast loading times and easy navigation. Bet on soccer, casino games, and virtual races without the complexities of the new version. Start betting in minutes!
old bet9ja
Pinco Casino'da eğlence sizi bekliyor! pinco
Pinco Casino'da hızla kayıt olabilirsiniz. Bonuslu oyunlar ve yüksek ödeme oranları ile oyun deneyiminizi zenginleştirin. pinco
Pinco Casino'da eğlence sizi bekliyor! pinco
Pinco Casino'da hızla kayıt olabilirsiniz. Bonuslu oyunlar ve yüksek ödeme oranları ile oyun deneyiminizi zenginleştirin. pinco
Exciting casino options await you at Pin-Up! At Pin-Up Casino, you'll find engaging slot games, table games, sports wagers, and much more. Play premium games from top providers like NetEnt and Microgaming, and take your chance for huge wins!
pin up casino india Maximizing the ?450000 Welcome Bonus at Pin-Up Casino. The Pin Up casino welcome offer of up to ?450000 is generous, but how can you take full advantage of it? Have you received this offer yet? Let us know your strategies and tips for transforming the bonus into huge payouts. Let’s talk about how to make the most out of your first top-up!
Exciting casino options await you at Pin-Up! At Pin-Up Casino, you'll find engaging slot games, table games, sports wagers, and much more. Play premium games from top providers like NetEnt and Microgaming, and take your chance for huge wins!
pin up casino india Maximizing the ?450000 Welcome Bonus at Pin-Up Casino. The Pin Up casino welcome offer of up to ?450000 is generous, but how can you take full advantage of it? Have you received this offer yet? Let us know your strategies and tips for transforming the bonus into huge payouts. Let’s talk about how to make the most out of your first top-up!
Use Taya365 bonuses for maximum victories taya365 app Uncover the world of online gaming with Taya365 and enjoy top-notch live games. Register today to receive huge rewards and bonuses! Taya365 and enjoy a world of adventure. Whether you're into sports betting, there's something to enjoy. Get started and win big! taya365 app download
Use Taya365 bonuses for maximum victories taya365 app Uncover the world of online gaming with Taya365 and enjoy top-notch live games.
Register today to receive huge rewards and bonuses! Taya365 and enjoy a world of adventure. Whether you're into sports betting, there's something to enjoy. Get started and win big! taya365 app download
دائماً أراهن في 1xbet Sports Betting Egypt – مضمون ومربح! أوصي به الآن! Online betting in Egypt
دائماً أراهن في 1xbet Sports Betting Egypt – مضمون ومربح!
أوصي به الآن! Online betting in Egypt
Mostbet জুয়া – বিশাল প্ল্যাটফর্ম ভার্চুয়াল গেমস জন্য। Mostbet BD
Mostbet জুয়া – বিশাল প্ল্যাটফর্ম ভার্চুয়াল গেমস জন্য। Mostbet BD
Онлайн казино Mostbet – кең ауқымды мүмкіндіктер ұсынады спорттық ставкалар сүйінушілеріне.
mostbet kazakhstan
Онлайн казино Mostbet – кең ауқымды мүмкіндіктер ұсынады спорттық ставкалар сүйінушілеріне. mostbet kazakhstan
На данном сайте всегда доступна актуальная ссылка на мега мориарти, которая обновляется регулярно, чтобы вы могли без проблем попасть на нужную платформу.
На данном сайте всегда доступна актуальная ссылка на мега мориарти, которая обновляется регулярно, чтобы вы могли без проблем попасть на нужную платформу.
why 1xbet is the best online casino site for UAE players Thank you for your openness and openness! �� 400 Bad Request
why 1xbet is the best online casino site for UAE players Thank you for your openness and openness! �� 400 Bad Request
دائماً أراهن في 1xbet مصر – مضمون ومثالي! جربه بنفسك الآن! 1xBet تسجيل
دائماً أراهن في 1xbet مصر – مضمون ومثالي! جربه بنفسك الآن! 1xBet تسجيل
جربت 1xbet Mobile App Egypt – يتميز بواجهة ممتازة، السحب دون مشاكل!
1xBet عروض ترويجية
جربت 1xbet Mobile App Egypt – يتميز بواجهة ممتازة، السحب دون مشاكل!
1xBet عروض ترويجية
هل تحتاج إلى أشهر شركة رهان؟ 1xbet شركة الرهان يقدم أقوى الفرص ودفعات سريعة! Jogar FortuneRabbit sempre foi tão simples.
هل تحتاج إلى أشهر شركة رهان؟ 1xbet شركة الرهان يقدم أقوى الفرص ودفعات سريعة!
Jogar FortuneRabbit sempre foi tão simples.
دائماً أشارك في 1xbet Sports Betting Egypt – مريح ومربح! أنصح به الآن! 1xBet in Egypt
دائماً أشارك في 1xbet Sports Betting Egypt – مريح ومربح! أنصح به الآن! 1xBet in Egypt
هل تبحث عن أقوى كازينو أونلاين؟ 1xbet Egypt يقدم أفضل العروض ودفعات سريعة! 1xBet تطبيق الجوال
هل تبحث عن أقوى كازينو أونلاين؟ 1xbet Egypt يقدم أفضل العروض ودفعات سريعة! 1xBet تطبيق الجوال
دائماً أراهن في 1xbet مصر – مريح ومثالي!
أنصح به الآن! Apostas em futebol
دائماً أراهن في 1xbet مصر – مريح ومثالي! أنصح به الآن! Apostas em futebol