suspendlayoutc#怎么关闭messagebox

C# 界面初始化时listview需要加载大量数据，求教提高速度的方法！！！

首先，一个列表里面有7万格项目是不合理的，因为你将没有办法通过拖动滚动条来准确定位，毕竟7万条记录的list滚动条得多小啊 其次，如果非要显示的话，建议使用异步填充，先组织好一批数据，然后填充这一批，期间UI线程还是可以相应的，这样虽然速度没有提升，但是用户体验会好一些 再次，如果要求必须一次填充完成的话，在开始填充时使用SuspendLayout()，挂起更新画面项目，然后在填充完以后ResumeLayout(true)恢复更新画面，并将前面挂起的画面更新恢复。

这样可以一定程度上节省更新的时间。

iewSample.SuspendLayout(); this.LoadListData(); iewSample.ResumeLayout(true); Ps: IsPostback是BS系统上面的，在你的Winform上没有意义。

金山词霸采用的是我说的第二种方案配合第三种方案，只加载一小部分，在你拖动滚动条的时候填充当前滚动条指定的那一段。

相当于分页。

上下滚动条vScrollBar怎么使用呀？我把滚动条放在PictureBox 里面，怎么让它们里面的内容发生滚动呢？

单就VScrollBar控件的使用来说，楼主可以参考下面的代码，但这可能并不能解决你的问题因为这还需要做很多其它的工作。

不过我还是愿意帮你解决问题而写了如下的一段代码，这是一个控件，可以放到窗体上运行后查看滚动条的效果，但或许有人能给楼主一更为完美的解决方案： C# code public partial class UserControl1 : UserControl { [StructLayout(LayoutKind.Sequential)] internal struct RECT { public int left; public ; public int right; public int bottom; public RECT(int left, , int right, int bottom) { this.left = left; =; this.right = right; this.bottom = bottom; } } [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)] private static extern bool ScrollWindow(IntPtr hWnd, int nXAmount, int nYAmount, ref RECT rectScrollRegion, ref RECT rectClip); private System.Windows.Forms.VScrollBar vScrollBar1; private int m_Top; public UserControl1() { this.InitializeComponent(); this.SetStyle(ControlStyles.ResizeRedraw, true); m_Top = 0; this.vScrollBar1.Scroll += new ScrollEventHandler(vScrollBar1_Scroll); } private void InitializeComponent() { this.vScrollBar1 = new System.Windows.Forms.VScrollBar(); this.SuspendLayout(); // // vScrollBar1 // this.vScrollBar1.Location = new System.Drawing.Point(275, 57); this.vScrollBar1.Name = "vScrollBar1"; this.vScrollBar1.Size = new System.Drawing.Size(17, 80); this.vScrollBar1.TabIndex = 0; // // UserControl1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.Controls.Add(this.vScrollBar1); this.Name = "UserControl1"; this.Size = new System.Drawing.Size(304, 174); this.ResumeLayout(false); } private void setScrollBar() { this.vScrollBar1.Top = 0; this.vScrollBar1.Left = this.Width - this.vScrollBar1.Width; this.vScrollBar1.Height = this.Height; this.vScrollBar1.Maximum = 1000 - this.Height; this.vScrollBar1.LargeChange = this.Height; this.vScrollBar1.Maximum += this.vScrollBar1.LargeChange + 1; this.m_Top = this.vScrollBar1.Value; } private RECT getBodyRect() { int left = 0; = 0; int width = this.Width-this.vScrollBar1.Width; int height = this.Height; RECT rect = new RECT(left,, left + width,+height); return rect; } void vScrollBar1_Scroll(object sender, ScrollEventArgs e) { RECT vSRect = this.getBodyRect(); ScrollWindow(this.Handle, 0, -(e.NewValue - m_Top), ref vSRect, ref vSRect); m_Top = e.NewValue; } protected override void OnPaint(PaintEventArgs e) { base.OnPaint(e); Rectangle rect = new Rectangle(0, -m_Top, this.Width - this.vScrollBar1.Width, 1000); e.Graphics.DrawEllipse(SystemPens.ControlDark, rect); } protected override void OnLayout(LayoutEventArgs e) { if (e.AffectedControl == this) { this.setScrollBar(); } base.OnLayout(e); } } 百度把缩进都给屏蔽了。

你将就看吧，或者复制到ide里格式化一下吧

c# 子窗口怎样添加控件？

DataGridView dg = new DataGridView(); this.Controls.Add(dg); 在窗体中的位置用dg.Left=100和dg.Top=100；来调整

c#怎么关闭messagebox

using?System; using?System.Drawing; using?System.Collections; using?System.ComponentModel; using?System.Windows.Forms; using?System.Data; using?System.Runtime.InteropServices; namespace?MyTest ...{ ????/**////?<summary> ????///?Form1?的摘要说明。

????///?</summary> ????public?class?Form1?:?System.Windows.Forms.Form ????...{ ????????private?System.Windows.Forms.Button?button1; ????????/**////?<summary> ????????///?必需的设计器变量。

????????///?</summary> ????????private?ponents?=?null; ????????public?Form1() ????????...{ ????????????// ????????????//?Windows?窗体设计器支持所必需的 ????????????// ????????????InitializeComponent(); ????????????// ????????????//?TODO:?在?InitializeComponent?调用后添加任何构造函数代码 ????????????// ????????} ????????/**////?<summary> ????????///?清理所有正在使用的资源。

????????///?</summary> ????????protected?override?void?Dispose(?bool?disposing?) ????????...{ ????????????if(?disposing?) ????????????...{ ????????????????if?ponents?!=?null)? ????????????????...{ ???????????????????ponents.Dispose(); ????????????????} ????????????} ????????????base.Dispose(?disposing?); ????????} ????????Windows?窗体设计器生成的代码#region?Windows?窗体设计器生成的代码 ????????/**////?<summary> ????????///?设计器支持所需的方法?-?不要使用代码编辑器修改 ????????///?此方法的内容。

????????///?</summary> ????????private?void?InitializeComponent() ????????...{ ????????????this.button1?=?new?System.Windows.Forms.Button(); ????????????this.SuspendLayout(); ????????????//? ????????????//?button1 ????????????//? ????????????this.button1.Location?=?new?System.Drawing.Point(176,?48); ????????????this.button1.Name?=?"button1"; ????????????this.button1.Size?=?new?System.Drawing.Size(96,?24); ????????????this.button1.TabIndex?=?0; ????????????this.button1.Text?=?"button1"; ????????????this.button1.Click?+=?new?System.EventHandler(this.button1_Click); ????????????//? ????????????//?Form1 ????????????//? ????????????this.AutoScaleBaseSize?=?new?System.Drawing.Size(6,?14); ????????????this.ClientSize?=?new?System.Drawing.Size(292,?266); ????????????this.Controls.Add(this.button1); ????????????this.Name?=?"Form1"; ????????????this.Text?=?"Form1"; ????????????this.ResumeLayout(false); ????????} ????????#endregion ????????/**////?<summary> ????????///?应用程序的主入口点。

????????///?</summary> ????????[STAThread] ????????static?void?Main()? ????????...{ ????????????Application.Run(new?Form1()); ????????} ????????private?void?button1_Click(object?sender,?System.EventArgs?e) ????????...{ ????????????StartKiller(); ????????????MessageBox.Show("这里是MessageBox弹出的内容","MessageBox"); ????????????MessageBox.Show("这里是跟随运行的窗口","窗口"); ????????} ????????private?void?StartKiller() ????????...{ ????????????Timer?timer?=?new?Timer(); ????????????timer.Interval?=?10000;????//10秒启动 ????????????timer.Tick?+=?new?EventHandler(Timer_Tick); ????????????timer.Start(); ????????} ????????private?void?Timer_Tick(object?sender,?EventArgs?e) ????????...{ ????????????KillMessageBox(); ????????????//停止计时器 ????????????((Timer)sender)(); ????????} ????????private?void?KillMessageBox() ????????...{ ????????????//查找MessageBox的弹出窗口,注意对应标题 ????????????IntPtr?ptr?=?FindWindow(null,"MessageBox"); ????????????if(ptr?!=?IntPtr.Zero) ????????????...{ ????????????????//查找到窗口则关闭 ????????????????PostMessage(ptr,WM_CLOSE,IntPtr.Zero,IntPtr.Zero); ????????????} ????????} ????????[DllImport("user32.dll",?EntryPoint?=?"FindWindow",?CharSet=CharSet.Auto)] ????????private?extern?static?IntPtr?FindWindow(string?lpClassName,?string?lpWindowName); ????????[DllImport("user32.dll",?CharSet=CharSet.Auto)] ????????public?static?extern?int?PostMessage(IntPtr?hWnd,?int?msg,?IntPtr?wParam,?IntPtr?lParam); ????????public?const?int?WM_CLOSE?=?0x10; ????}