标签控件内的FlowLayoutPanel
作者:互联网
我在每个选项卡中都有一个tabControl和flowLayoutPanel.当我将文件拖放到选项卡上时,它将创建一个按钮,其中包含文件的图标.但是我可以选择创建更多选项卡,并且我希望能够将文件拖到所选选项卡中.但是问题是添加按钮时的flowLayoutPanel.
到目前为止,我的代码:
public Process myProcess = new Process();
FlowLayoutPanel fl_panel = new FlowLayoutPanel();
string path_app;
public Form1()
{
InitializeComponent();
//add the flowLayoutPanel on the first tab
fl_panel.Dock = DockStyle.Fill;
fl_panel.BringToFront();
tabPage1.Controls.Add(fl_panel);
this.DragEnter += new DragEventHandler(Form1_DragEnter);
this.DragDrop += new DragEventHandler(Form1_DragDrop);
}
void Form1_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.FileDrop, false))
e.Effect = DragDropEffects.All;
}
void Form1_DragDrop(object sender, DragEventArgs e)
{
string[] fileList = e.Data.GetData(DataFormats.FileDrop) as string[];
foreach (string s in fileList)
{
Button button = new Button();
button.Click += new EventHandler(this.button_Click);
fl_panel.Controls.Add(button);
path_app = String.Format("{0}", s);
button.Tag = path_app;
string filename = path_app;
Icon icon = System.Drawing.Icon.ExtractAssociatedIcon(filename);
Bitmap bmp = icon.ToBitmap();
button.BackgroundImage = bmp;
button.Width = 60;
button.Height = 75;
button.FlatStyle = FlatStyle.Flat;
button.BackgroundImageLayout = ImageLayout.Stretch;
}
}
private void button_Click(object sender, System.EventArgs e)
{
String path_app = ((sender as Button).Tag as String);
myProcess.StartInfo.FileName = path_app;
myProcess.Start();
}
private void add_tab_btn_Click(object sender, EventArgs e)
{
//Create new tab with FLP inside
string title = Convert.ToString(textBox1.Text);
TabPage new_TabPage = new TabPage(title);
fl_panel.Dock = DockStyle.Fill;
fl_panel.BringToFront();
new_TabPage.Controls.Add(fl_panel);
tabControl1.TabPages.Add(new_TabPage);
}
}
如果我使用fl_panel.Controls.Add(button);它会在第一个选项卡上很好地添加按钮,但是如果我创建一个新选项卡,我不知道如何将tabControl.SelectedTab与fl_panel.Controls.Add(button)一起使用,以将按钮正确地添加到所选选项卡上.
解决方法:
您必须为每个选项卡创建一个新的FlowLayoutPanel:
FlowLayoutPanel fl_panel = new FlowLayoutPanel();
...
new_TabPage.Controls.Add(fl_panel);
然后,您可以将TabPage的第一个元素转换为FlowLayoutPanel并从那里访问控件:
FlowLayoutPanel selectedFLP = (FlowLayoutPanel)tabControl.SelectedTab.Controls[0];
...
标签:tabcontrol,flowlayoutpanel,c 来源: https://codeday.me/bug/20191121/2055399.html