[英]How to move all labels in Form1 programmatically in C# Winforms
我正在尝试移动位于Form1中的所有标签。 我可以移动特定标签,但是如何循环和移动所有标签? 感谢您的帮助和建议。
移动特定标签:
label1.Location = new Point(0, 0);
这将无法工作:
Form1 f1 = new Form1();
for (int i = 0; i < f1.Controls.Count; i++)
{
f1.Controls[i].Location = new Point(0, 0);
{
您可以遍历所有控件,但需要检查控件的类型以查看它是否实际上是标签。 下面的代码应该可以工作,如果ctrl
实际上不是标签,则as
关键字将导致labelControl
为null
//Form1 f1 = new Form1(); // Removed, using this means you're calling from within the control you want to change already.
foreach (var ctrl in this.Controls)
{
var labelControl = ctrl as Label;
if (labelControl == null)
{
continue;
}
labelControl.Location = new Point(0, 0);
}
您可以使用is限定符来确定控件是否确实是标签
//Form1 f1 = new Form1(); as pointed out this is not needed your are already on the right instance. doing new creates a new instance
for (int i = 0; i < Controls.Count; i++)
{
if (Controls[i] is Label){
Controls[i].Location = new Point(0, 0);
}
}
应该可以
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