C＃TextBox.Text =多个单词

Question

is it possible to make more words than one, i have created a timer, which checks what is typed in a textbox, and if write password typed changes a picture, so my other if function don't work, how could i make something like this:

The code of statement, i need something like this: if (metroTextBox1.Text == "byby", "cow", "root")

if (metroTextBox1.Text == "byby")
{
     Image img = Properties.Resources.Good_Pincode_48px; // Right'as
     metroTextBox1.Icon = img;
}
else
{
    // new wrong().Show();
    Image img = Properties.Resources.Wrong_Pincode_48px; // Wrong'as
    metroTextBox1.Icon = img;
}

Answer 1

Try this:

if(new string[] { "byby", "cow", "root" }.Contains(metroTextBox1.Text))
{
   ...
}

EDIT:

Like suggested in the comments you can use a HashSet instead of an Array to store the words you want to compare. The Contains method works faster with a HashSet since it has a O(1) lookup whereas Arrays and Lists have a O(n) lookup.

HashSet<string> words = new HashSet<string>(){ "byby", "cow", "root" };
if (words.Contains(metroTextBox1.Text))
{
    ...
}

Answer 2

Ok, I'll add my 2 cents to Slaven Tojić's answer:

.

• You could create a property with collection of words:

   private HashSet<string> WordsList { get; } = new HashSet<string>(new[] { "byby", "cow", "root" }); 

.

• And add event handler to TextChanged event of the TextBox :

   this.textBox1.TextChanged += TextBox1OnTextChanged; 

.

• And in event handler use collection to check if it contains the element:

   private void TextBox1OnTextChanged(object sender, EventArgs e) { if (this.WordsList.Contains(textBox1.Text)) { // ... } } 

Answer 3

use this with comparater to avoid case problems

      if(new string[] { "byby", "cow", "root" }
         .Contains(metroTextBox1.Text,StringComparison.OrdinalIgnoreCase))
        {
           ...
        }