vb.net在文本框中选择第一行

Question

In VB.net I want to select the first line in a textbox. This is my code:

WebBrowser1.Document.GetElementById("Email").SetAttribute("value", TextBox1.Text)

But this selects the entire box, How can I change this so it only gets the first line?

Answer 1

You can try this, provided that you add some error handling:

Dim arr() As String
arr = New String() {Environment.NewLine}    
WebBrowser1.Document.GetElementById("Email").SetAttribute("value",TextBox1.Text().Split(arr, StringSplitOptions.None)(0).ToString()