Calculation Code

am using form that calculates the water footprint based on the consumption rate that the user enters ... similar is applied for electricity footprint.

the form uses the figures which is in the text box to multiply it to the factor which is saved in the drop down list ...

the result should be saved in the label

this process is easy and straightforward
however i want to let the user to reenter the same figures for example if he wants to add more than one buildings (water and electricity)

what could be done so that the first result is saved in label 1

and the other result which the user will re enter the consumption...

Protected Sub calculatememButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles calculatememButton.Click

Dim E_member As Double

Dim W_member As Double

Dim E_result As String

Dim w_result As String

Dim e_factor As Double

Dim w_factor As Double

E_member = electricitytxtmem.Text

W_member = watertxtmem.Text

E_result = E_result_mem_lbl.Text

w_result = W_result_mem_lbl.Text

e_factor = e_mem_f_DropDownList.Text

w_factor = W_mem_f_DropDownList.Text

E_result = E_member * e_factor

w_result = W_member * w_factor

If IsDBNull(objReader("E_result")) = False Then

E_result_mem_lbl.Text = " * The value you've entered is: ( " & E_member & " ) and this value represents your Electrecity consumption rate for building 1.

* Your Electricity carbon footprint is: (" & E_result & ") Metric Tons."

ElseIf

IsDBNull(objReader("E_result")) = True Then

W_result_mem_lbl.Text = "* The value you've entered is: ( " & W_member & " ) and this value represents your Water consumption rate for building 1.

* Your water carbon footprint is: (" & w_result & ") Metric tons."

Else

Response.Write.("")

End If

End Sub

2 Replies

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Ayesha balooshi16y ago
Dear Justin,

I'm using VB , not C# ....

so that am not aware if that option is possible and am just a beginner I don't know how to use such a thing.
Justin Andrews16y ago
Have you considered storing your results to a list?

In C# I would declare a private class level variable List _myStringList = new List(); and each time the user enter a value (inside click event) I would add the item to my list... _myStringList.add("my new string value");