我需要在textbox1和.................中选择前5个字母。 [英] I need to select the first 5 letters in textbox1 and ..................

查看:62
本文介绍了我需要在textbox1和.................中选择前5个字母。的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我需要选择textbox1中的前5个字母和文本框2中的前5个字母,并将它们与 - xxxxx-xxxxx分隔成另一个文本框。



任何人都有任何建议?

解决方案

如果你甚至不能尝试这个,你需要购买一本初学者书并阅读它。



string s = textbox1.text.substring(0,5)+ - + textbox2.text.substring(0,5)



当然,如果文本框中的字符少于5个字符,这将会爆炸,你需要添加代码来处理它。一般来说,对于获取ASP.NET,你太过于担心初学者了。首先学习如何做基本代码。


这就是我最终做的事情:感谢Christian的帮助。我最终将它们更改为下拉列表,但它对于文本框的工作方式相同。



  Dim  mystring  As   String  = DropDownList3.SelectedItem.Text.ToString()
< span class =code-keyword> Dim substring As String = mystring.Substring( 0 5

Dim mystring2 As String = DropDownList4.SelectedItem.Text.ToString()
Dim substring2 As String = mystring2.Substring ( 0 4

Dim mystring3 作为 字符串 = TDropDownList.SelectedItem.Text.ToString()
Dim substring3 As String = mystring3.Substring( 0 3

refnumber.Text = substring + - + substring2 + - + substring3


I need to select the first 5 letters in textbox1 and the first 5 letters in textbox 2 and separate them with a - like: xxxxx-xxxxx into another textbox.

anyone have any suggestions?

解决方案

If you can''t even attempt this, you need to buy a beginners book and read it.

string s = textbox1.text.substring(0,5) + "-" + textbox2.text.substring(0,5)

Of course, this will blow up if there''s less than 5 chars in the textbox, you need to add code to deal with that. and in general, for get ASP.NET, you''re too much of a beginner to worry about that. Learn how to do basic code first.


this is what i ended up doing: thanks for the help though Christian. I ended up changing them to dropdownlists but it works the same for textboxes.

Dim mystring As String = DropDownList3.SelectedItem.Text.ToString()
Dim substring As String = mystring.Substring(0, 5)

Dim mystring2 As String = DropDownList4.SelectedItem.Text.ToString()
Dim substring2 As String = mystring2.Substring(0, 4)

Dim mystring3 As String = TDropDownList.SelectedItem.Text.ToString()
Dim substring3 As String = mystring3.Substring(0, 3)

refnumber.Text = substring + "-" + substring2 + "-" + substring3


这篇关于我需要在textbox1和.................中选择前5个字母。的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

查看全文
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆