NetworkVar​iableDataS​ource.Bind​ings[Varia​bleName].G​etValue() leaks memory

Question

Dear Sir,
We are using Measurement
Studio 8.5 for Visual Studio 2005. Our application reads 105 Netwrok
Variables in every seconds. It does the work done through
NetworkVariableDataSource.Bindings[VariableName].G​etValue(). So far we
have tested and determined that the GetValue() methods leaks some
memory and every seconds the memory consumption by the application goes
up. How can we solve this problem? We are using c# lannguage.We need argent solution.
Best regards,
Mamunur Rashid,
TechnoVista Limited

Answer 1

 Dear Eric B.,
Following are some code segements
Some
aspx code: 
<td>
<asp:UpdatePanel ID="UpdatePanelDO_KV601A_KV601B" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<uc3:NIButton ID="DO_KV601A_KV601B" runat="server" VariableName="DO_KV601A-KV601B"
Caption="KV601A-B"></uc3:NIButton>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick"></asp:AsyncPostBackTrigger>
</Triggers>
</asp:UpdatePanel>
</td>
<td>
<asp:UpdatePanel ID="UpdatePanelAO_FC601" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<uc2:NIText ID="AO_FC601" ToolTip="FC601" runat="server" VariableName="FC601"></uc2:NIText>
</ContentTemplate>
<%--<triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick"></asp:AsyncPostBackTrigger>
</triggers>--%>
</asp:UpdatePanel>
</td>
<td>
<asp:UpdatePanel ID="UpdatePanel51" runat="server" UpdateMode="conditional">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
</Triggers>
<ContentTemplate>
<uc1:NIReadOnlyText ID="AI_FT601" VariableName="FT601" ToolTip="FT601" runat="server"
Enabled="false"></uc1:NIReadOnlyText>
slpm
</ContentTemplate>
</asp:UpdatePanel>
</td>
Some
code of Timer1_Tick of aspx.cs
protected void Timer1_Tick(object sender, EventArgs e)
refreshCustomControls(Page.Controls[0]);
protected void refreshCustomControls(Control control)
if (control is NINetworkVariableTextBox)
if (!txtActiveControlID.Text.Contains(control.ID))
// get the update panel that this user control lives in
// Control updatePnl = Page.FindControl(control.Parent.Parent.ID);
Control updatePnl = control.Parent.Parent;
NINetworkVariableTextBox tb = (NINetworkVariableTextBox)control;
string origValue = tb.Text;
// read the current data from the shared variable
tb.readData();
// tell this update panel to update
((UpdatePanel)updatePnl).Update(); //It is needed to remove yellow back color and update data and here no asychonous postback is used
else if (control is NINetworkVariableReadOnlyTextBox)
if (!txtActiveControlID.Text.Contains(control.ID))
FormattingValueOfReadOnlyText(control);
else if (control is NINetworkVariableButton)
if (!txtActiveControlID.Text.Contains(control.ID))
((NINetworkVariableButton)control).readData();
/* these controls are in asychonous update with timer so dont need to update panel update()*/
else if (control is NINetworkVariableRadioButton)
//if (control.ID != txtActiveControlID.Text)
if (!txtActiveControlID.Text.Contains(control.ID))
((NINetworkVariableRadioButton)control).readData()​;
else if (control.ID == "controlgraph")
return;
else
foreach (Control child in control.Controls)
refreshCustomControls(child);