How to store multiple values in a string without overriding the pervious one

bamboat_3 · #1 (**permalink**) 05-18-04, 06:23 AM

Hi Friends,

I am new user of ASP.NET. I’m trying to store the multiple values in a string, but very time it override the pervious value whenever I call the function through a command button.

Please help me out.

Here I also enclosing the sample coding for your reference

<%@Page Language=VB Debug=True %>
<Script runat="server">

Dim WorkExperience as String

Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)

lblMessage.Text = "Press a button !"

WorkExperience +=" Hello !"

End Sub

Sub SubmitBtn_AddValue(Sender as Object, E as EventArgs)

WorkExperience + = "IT Officer"
WorkExperience + = "01,"
WorkExperience + = "2002,"
WorkExperience + = "02,"
WorkExperience + = "2002,"
WorkExperience + = "Hello2,"
WorkExperience + = "+"

lblMessage.Text= WorkExperience

End Sub

</Script>

<html>
<body>
<form runat="server">
<asp:Label
id="lblMessage"
Text=""
runat="server"
/>
<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
<asp:Button
id="butAlone"
text="Add Value"
OnClick="SubmitBtn_AddValue"
runat="server"
/>

<BR>
<BR>
</form>
</body>
</html>

Try to run the above cited code. You will find a button named as "Add Value", if u press this button it will display a dummy value, now I want that if you press this Add Value more than once time then it must display the dummy value respectively.

For Example: Press this button 3 times then it must show the same value 3 times.

Please reply me soon because all my work is halt due to this problem

Looking forward to your reply...

Regards,
Mustafa Bamboat
bamboat_3@hotmail.com

Shane · #2 (**permalink**) 05-20-04, 12:49 PM

The problem is that you are not retrieving the value of the label before you append the data to the end of the string.

You overwrite the data every time with the variable you're using, but you're never getting the data that already existed first.

bamboat_3 · #3 (**permalink**) 05-20-04, 10:34 PM

Dear Shane,
I solved out this problem by using the ViewState Command lets try this in the code.
Something looks like that:

If Not Isnothing(ViewState("SavedWorkExperience")) Then
WorkExperience = ViewState("SavedWorkExperience")
End If

WorkExperience = "IT Office"
WorkExperience += "Hello"
WorkExperience += " how r"
WorkExperience += "U !!!"

ViewState("SavedWorkExperience") = WorkExperience

This is working fine and it solved out my problem what I was facing
Please avoid the spelling mistakes
Thank you.

Quote:

Originally Posted by Shane

The problem is that you are not retrieving the value of the label before you append the data to the end of the string.

You overwrite the data every time with the variable you're using, but you're never getting the data that already existed first.

GO4TF4CE · #4 (**permalink**) 08-26-04, 09:08 AM

just incase anyone finds this useful there is a string builder function which is pretty handy when doing sql commands.

Dim TempSQL as New StringBuilder()
TempSQL.append("1,")
TempSQL.append("2,")
TempSQL.append("3")

and just use TempSQL.tostring() to get the whole string which would be 1,2,3 in this case.