[英]C# - Extension method
我筋疲力尽了。 需要帮助字符串类型“words”的正确扩展方法是什么..... words.Text ==“blue”产生错误
string userInput = textBox1.Text;
string[] words = userInput.Split();
if (words.Text ==" blue ")
{
string color = words[2];
label1.Text = "The third word is: " + color;
}
else
{
label1.Text = "Not enough words.";
}
您无法在字符串数组上获取“.Text”,即“words”。 但是,您可以执行以下操作:
for (int i = 0; i < words.Length; i++)
{
Console.WriteLine(string.Format("The {0} word is {1}", i+1, words[i]));
}
但是,我不确定您要做什么。
从数组中正确检索值:
string userInput = textBox1.Text;
string[] words = userInput.Split();
foreach(string word in words)
{
if(word == "blue")
{
string color = word;
label1.text = "The third word is: " + color;
}
else
{
label1.Text = "Not enough words.";
}
}
我不确定你要做什么,但如果我严格遵守,你可以这样做:
if (words[2] ==" blue ")
{
string color = words[2];
label1.Text = "The third word is: " + color;
}
else
{
label1.Text = "Not enough words.";
}
如果您指的是 Linq 然后在数组中找到单词 blue 它可能是
if (words.Any(x=>string.Equals(x, "blue"))) {
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