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i started a create a simple web browser...
when i code it web page is not loading...
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
webBrowser1.Navigate("textBox1.Text");
}
}
}
This is the error when i go to a web page.
When you used the "" literals, you told the Compiler to treat what is between these "" as a literal string and not a valid C# expression. So the expression will not be evaluated. And your WebBrowser control will receive this literal string "textBox1.Text" exactly as it is. And not the Text property of textBox1 Control. By removing these "" literals:
webBrowser1.Navigate(textBox1.Text);
Your WebBrowser control will receive the value of Text property of the textBox1 control.
use webBrowser1.Navigate(textBox1.Text); instead
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I am working on winforms using c# where I have mutliple forms and one class. I want to use the same object of that class in all forms. How can I pass the objects from one class to another.
like in form2, I made an object user1 and then i wanna use the same user1 in form3. so for this I write a code which I have read on stake overflow but its not working.
private void loginbutton_Click(object sender, EventArgs e)
{
user1.login(textname.Text, textpassword.Text);
if (user1.success==true)
{
Form f3 = new Form3();
f3.SameUser = user2;
f3.Show();
this.Hide();
}
and then on form3 I wrote:
public partial class Form3 : Form
{
public User SameUser { get; set; }
// other function of form
}
It is giving me this error:
Inconsistent accessibility: property type 'User' is less accessible than property 'Form3.SameUser'
The problem has nothing to do with your forms. As the error states, the type User is less accessible (in this case "not public") than the form's SameUser property.
So consuming code can see the SameUser property, but might not be able to see what a User even is.
If you want that property to be public then the User class must also be public.
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When creating a winforms application I added a pannel as a header so I could make the application borderless, I was going to add some buttons when I realised no events were getting registered by the program. Have I flicked a wrong switch somewhere?
I have already tried clicking the main form and changing the AutoValidation as well as checking that the form, as well as the panel, were both enabled.
public App()
{
InitializeComponent();
}
private void TopBar_MouseHover(object sender, EventArgs e)
{
Application.Exit();
}
private void ExitButton_Click(object sender, EventArgs e)
{
Application.Exit();
}
Expect result is that it should just close the application when I hover over the topbar or when I click the ExitButton.
I fixed this by going through the properties of the Forms/Buttons and resetting them as it turns out I had one item disabled.
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Ok, new to C# (What a pain!!!) and I am simply trying to have a button on Form1 open Form2
My structure:
Root Folder
|
Screens
|
Form1.cs
Form2.cs
My Code:
private void button1_Click(object sender, EventArgs e)
{
this.Visible = false;
MessageBox.Show("pausing for 3 sec");
System.Threading.Thread.Sleep(3000);
Screens.Form2 f2 = new WindowsFormsApp1.Screens.Form2();
f2.ShowDialog;
}
The error is on the f2.showdialog; line:
Error: CS0201 C# Only assignment, call, increment, decrement, await, and new object expressions can be used as a statement
This makes no sense. I believe I am properly calling the form in the subfolder?
f2.ShowDialog; isn't a method call (because there are no brackets ()), so the compiler thinks you're trying to execute a property or field.
It should be f2.ShowDialog();
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I have a button on my form, but I am unable to access it from my code. My code (from Program.cs):
Form1.button1.Text = "Button text"
I cannot access it due to it's protection level. What shall I do to change this field protection level or something?
On the properties window you can change the privacy of the components. You need to change the button privacy to public.
--EDIT
What fildor wrote is a better aproach
Changing the modifier of an object is a bad idea.
Better would be to create a public property on Form1, for example Button1Text and call that in stead of accesing a private object.
public string Button1Text
{
get { return Button1.Text; }
set {Button1.Text = value; }
}
then call it like this
form1.Button1Text = "I am a button"
Make sure that form1 is the created instance for your form, not the class name !
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Closed 8 years ago.
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It skips the navigating to valid URL and goes straight to a Google search. If I enter "stackoverflow.com" into textbox it will Google search for "stackoverflow.com".
private void button1_Click(object sender, EventArgs e)
{
webBrowser1.Navigate(textBox1.Text); //navigates to url in textbox
if (!textBox1.Text.StartsWith("http://"))
{
webBrowser1.Navigate("http://www.google.ie/search?q=" + (textBox1.Text));
}
}
That code, in English, basically says "navigate to whatever was entered into the textbox. Then, IF whatever you entered into the textbox does NOT start with 'http://' let's immediately do a Google search for it."
Basically you are navigating to stackoverflow.com but you're then immediately Google searching for it instead. If you want it to act differently, you need to code it differently.
Here's how I'd rework it:
private void button1_Click(object sender, EventArgs e)
{
if (!textBox1.Text.StartsWith("http://"))
{
// didn't start with "http://" so search for it
webBrowser1.Navigate("http://www.google.ie/search?q=" + (textBox1.Text));
}
else
{
// navigate directly to the URL
webBrowser1.Navigate(textBox1.Text);
}
}
In an if-else statement, only one logic path will be chosen based on conditions. It will never be the case that both run.
It searches Google because your logic is saying that 'if the textbox contents doesn't start with http:// let's do a Google search'. You are actually loading stackoverflow.com, but you immediately change the page and load Google instead.
You might want the code below with your code modified to 'filter' out and save some memory by not loading stackoverflow.com first:
private void button1_Click(object sender, EventArgs e)
{
if (!textBox1.Text.StartsWith("http://") | !textBox1.Text.StartsWith("www") || !textBox1.Text.StartsWith("http://www"))
{
webBrowser1.Navigate("http://www.google.ie/search?q=" + (textBox1.Text));
}
else
{
webBrowser1.Navigate(textBox1.Text); //navigates to url in textbox
}
}