This question already has answers here:
Process.Start(url) fails
(6 answers)
Closed 2 months ago.
I want user to go on a link when he clicks on a button. I use 6.0 .Net Framework
When I click on button its says system cannot find specified file
private void button1_Click(object sender, EventArgs e)
{
System.Diagnostics.Process.Start("https://example.com");
}
Try this:
System.Diagnostics.Process.Start("explorer.exe", "http://google.com");
Related
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C# - Add button click events using code
(3 answers)
Closed 3 years ago.
I very new to C# and I would like to add a Button to a form programmatically. When this button is pressed I want it to run some code (like a normal button woukd work). But, everywhere I have searched only shows how to add the button and not how to add code to the button.
One way to do it is to give the button a name property, then in your code you "refer" to the button by it's name like so:
void btnButton_Click(object sender, EventArgs e)
{
// your code goes here
}
where btnButton_Click is the name of the button.
This question already has answers here:
Watermark TextBox in WinForms
(11 answers)
Adding placeholder text to textbox
(26 answers)
Closed 3 years ago.
I am working on a Winforms project and I would like to create a Watermark in a TextBox. I tried a code that seems to be the right solution but is incorrect.
There is my code :
private void Form1_Load(object sender, EventArgs e)
{
textBox1.Text = "Veuillez entrez votre nom ici";
if (textBox1.GotFocus)
{
textBox1.Text = "";
}
}
And I get this error at "GotFocus" :
CS0079 C# The event can only appear on the left hand side of += or -=
I searched on google but I didn't find any solutions to help my case.
What should I use instead of "GotFocus" to create a Watermark ?
Best regards, Zancrew.
A lazy solution
create a label and locate it where you want your watermark to be shown and disable it
then paste code below on textbox's textchanged event
label_watermark.Visible = textBox1.Text.Length<1;
This question already has an answer here:
Pressing buttons multiple times loads multiple pages (Android)
(1 answer)
Closed 6 years ago.
I am using Xamarin.forms, Some times user will click twice on same button, I am search away to avoid open same page twice, maybe disable the button after first click will work fine, but i am searching away to avoid open same page if page already exist on Navigation stack.
btnCustomerPage.Clicked += (object sender, EventArgs e) =>
{
//CustomerPage already Exist on Navigation Stack,So user already open it.
Navigation.PushAsync(new CustomerPage();
};
if (Navigation.NavigationStack.Count == 0 ||
Navigation.NavigationStack.Last().GetType() != typeof(CustomerPage))
{
await Navigation.PushAsync(new CustomerPage(), true);
}
This question already has answers here:
System.Diagnostics.Process.Start not work from an IIS
(6 answers)
Closed 7 years ago.
I tried to run my webpage and the Console.WriteLine did not work.
Does anyone know why?
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
System.Diagnostics.Process.Start("https://www.google.com.sg/");
Console.WriteLine("Running");
System.Diagnostics.Trace.WriteLine("run");
}
You should use code like
this.webBrowser1.Navigate("http://google.com");
Also it's weird to navigate to another in DocumentCompleted event. Implement it in button click handler as example.
This question already has answers here:
How to detect the currently pressed key?
(12 answers)
Closed 8 years ago.
For the button, how to detect whether it is ctrl + click a button, in the click event handler?
I am using VS 2010 using C#.
Are we talking about winforms, wpf or asp application? I will make a quick assumption that it's winforms, so here goes:
Form Form1;
button.Click += click;
private void click(object s, EventArgs e)
{
if(Form1.ModifierKeys == Keys.Control)
... // Whatever you need here
}