如何检查文本框中的值是否已选中 [英] how to check value from textbox is checked

问题描述

Hello Everyone



a有一个网页有50个文本框。如果有任何数据被更改，我必须保存它。

如何检查任何一个文本框中的值都被更改。



谢谢。

plz help

Hello Everyone

a have one web page which have 50 textbox.If any ones data is changed than i have to save it.
how to check Value in any one textbox is changed.

Thanks.
plz help

推荐答案

-------------in .cs page

protected void TextBoxName_TextChanged(object sender,EventArgs e) 
   {
       do insertion
   }

--------------in .aspx page

<asp:textbox id="TextBoxName" runat="server" ontextchanged="TextBoxName_TextChanged" xmlns:asp="#unknown"></asp:textbox>

Dim numOfDesiredControls As Int16



受保护的子Page_Load（）处理form1.Load



试试

numOfDesiredControls = Convert.ToInt16（txtEnter.Text）

如果不是numOfDesiredControls = 0那么

对于i as Int16 = 1 To numOfDesiredControls

Dim txtTest As New TextBox

txtTest.Text =dynamicTextBox

txtTest.ID =dynamicTextBox+ i.ToString

txtTest.AutoPostBack = True

'txtTest.EnableViewState = False

Form.Controls.Add（txtTest）

AddHandler txtTest.TextChanged，AddressOf dynamicEventHandler

下一页

结束如果

Catch ex As Exception



结束尝试

结束子



受保护的子DynamicEventHandler（ByVal发送者为对象，ByVal e As System.EventArgs）

'如果事件处理程序被触发，请通过更改lblConfirm的文本来反映这一点

Dim txt As TextBox

txt = CType（sender，TextBox）

lblConfirm.Visible = True

lblConfirm.Text =事件处理程序+ txt.Id +炒：+ txt.Text

结束子



------------------------------------------- -------

Dim numOfDesiredControls As Int16

Protected Sub Page_Load() Handles form1.Load

Try
numOfDesiredControls = Convert.ToInt16(txtEnter.Text)
If Not numOfDesiredControls = 0 Then
For i As Int16 = 1 To numOfDesiredControls
Dim txtTest As New TextBox
txtTest.Text = "dynamicTextBox"
txtTest.ID = "dynamicTextBox" + i.ToString
txtTest.AutoPostBack = True
' txtTest.EnableViewState = False
Form.Controls.Add(txtTest)
AddHandler txtTest.TextChanged, AddressOf dynamicEventHandler
Next
End If
Catch ex As Exception

End Try
End Sub

Protected Sub dynamicEventHandler(ByVal sender As Object, ByVal e As System.EventArgs)
' If the event handler gets fired, reflect this by changing the text of lblConfirm
Dim txt As TextBox
txt = CType(sender, TextBox)
lblConfirm.Visible = True
lblConfirm.Text = "Event handler " + txt.Id + " fired: " + txt.Text
End Sub

--------------------------------------------------

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