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I am developing a instructional aids for school, that should be able to lock student windows tab to one app, and he cannot access other app. This locking is on request sent by server, and the lock/unlock action should be performed in a timely basis.
I have looked into "assigned access", but it seems not suitable, because it require a special user account, and need a reboot to enter the mode.
Do you have any idea or direction to handle this?
Target platform is Windows 10.
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Windows doesn't support this because, well, it's a shared system running many applications at once.
The only way I know of is that you'd have to install an application on the target machines that, on command, installs a global keyboard hook to catch and eat Alt-Tab, Ctrl-Esc and Ctrl-Shift-Esc. You'd also have to set the policy on the machines that prevent users from running Task Manager.
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Have you examine the possibilities of using "kiosk mode" ? There are resources here on CP: [^].
«I want to stay as close to the edge as I can without going over. Out on the edge you see all kinds of things you can't see from the center» Kurt Vonnegut.
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I just cannot seem to figure this out. It is more IDE/XAML question, I realize. I tried
<GridViewColumn x:Name="GridViewColumnTotal" Header="Total"
DisplayMemberBinding="{Binding Total}"
Width="100"
TextBlock.TextAlignment="Right"
TextBlock.FontWeight="ExtraBold"/>
the column is neither bold or Right aligned 
Can someone point me to an example on how to do this?
thanks!
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Use the correct forum:
Silverlight/WPF[^]
"Fairy tales do not tell children the dragons exist. Children already know that dragons exist. Fairy tales tell children the dragons can be killed."
- G.K. Chesterton
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I may be off-base as I'm currently learning XAML myself ... but it looks like there is a "layer" missing from the tree... maybe
<GridViewColumn x:Name="GridViewColumnTotal" Header="Total" Width="100">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Total}" TextAlignment="Right" FontWeight="ExtraBold"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>(Not tested!)
modified 8-Oct-15 12:19pm.
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Thanks for the reply. I have a problem that I get an error on the line:
<GridViewColumn.CellTemplate> The error is "An attribute name is missing"
Gawd! This user interface stuff is more complicated than writing an algorithm! 
modified 8-Oct-15 12:17pm.
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I edited your response as the code line wasn't showing.
I also missed a closing > from my post - I've edited it
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Wow!, that fixed the bold issue perfectly, big thanks!
Now, I just need to figure out why right alignment is not working...
Really, thanks!
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Cool! I'm obviously getting better with WPF 
For the alignment have a look at this post[^]
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I wanted to give alert message when the search result is invalid....
I have a code but its not working. Could anyone help me?
protected void btn_search_Click(object sender, EventArgs e)
{
lstbox_clotho.Items.Clear();
string search=txtbox_clotho.Text;
if (txtbox_clotho.Text != "")
{
string[] licfiles = Directory.GetFiles(@"\\192.168.5.10\fbar\TOOLS\ProbingApps\ProbingSystem\Clotho_License", "*" + txtbox_clotho.Text + "*.lic", SearchOption.AllDirectories);
foreach (string file in licfiles)
{
lstbox_clotho.Items.Add(new ListItem(Path.GetFileName(file), file));
}
{
txtbox_clotho.Text = "";
}
else
{
Response.Write("<script>alert('For this Wafer ID Report is Not Generated');</script>");
}
}
}
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You must be more specific than, "it's not working."
What is it doing wrong? Is there an error message? If yes, what's the message and on what line of code does it happen?
The difficult we do right away...
...the impossible takes slightly longer.
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There is no error. It is not showing any messages..
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Show the entire HTML document as it is passed to the client.
You do know that you can't just send that script snippet as the whole document, right?
The difficult we do right away...
...the impossible takes slightly longer.
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using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Collections;
namespace wsmfgit
{
/// <display files in listbox from directory>
public partial class downloadsoftware : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//Directory.CreateDirectory("C:\\DesktopCopyTemp");
DirectoryInfo info = new DirectoryInfo(@"\\192.168.5.10\fbar\TOOLS\ProbingApps\ProbingSystem\DesktopCopyTemp");
FileInfo[] Files = info.GetFiles("*.*");
foreach (FileInfo file in Files)
{
ListBox1.Items.Add(file.Name);
}
}
///</display>
/// <link to home button>
protected void imgbtn_home_Click(object sender, ImageClickEventArgs e)
{
Response.Redirect("default.aspx");
}
///</link>
///<software download button1>
protected void btn_dwn_Click(object sender, EventArgs e)
{
string File = ListBox1.SelectedValue;
Response.ContentType = ContentType;
Response.AppendHeader("Content-Disposition", "attachment; filename=" + Path.GetFileName(File));
Response.End();
}
/// </software>
protected void btn_search_Click(object sender, EventArgs e)
{
lstbox_clotho.Items.Clear();
string search=txtbox_clotho.Text;
if (txtbox_clotho.Text != "")
{
string[] licfiles = Directory.GetFiles(@"\\192.168.5.10\fbar\TOOLS\ProbingApps\ProbingSystem\Clotho_License", "*" + txtbox_clotho.Text + "*.lic", SearchOption.AllDirectories);
foreach (string file in licfiles)
{
lstbox_clotho.Items.Add(new ListItem(Path.GetFileName(file), file));
}
{
txtbox_clotho.Text = "";
}
}
}
protected void imgbtn_dwn_Click(object sender, ImageClickEventArgs e)
{
string licfiles = lstbox_clotho.SelectedValue;
Response.ContentType = ContentType;
Response.AppendHeader("Content-Disposition", "attachment; filename=" + Path.GetFileName(licfiles));
Response.TransmitFile(Server.MapPath(@"C:\Avago.ATF.Common\License" + "licfiles"));
Response.End();
}
}
}
This is my c# code:
<asp:ListBox ID="ListBox1" runat="server" style="z-index: 1; left: 406px; top: 311px; position: absolute; width: 339px; height: 163px; margin-left: 3px; margin-top: 0px" BackColor="White" Font-Bold="True" ForeColor="#000066" ></asp:ListBox>
gt;
<asp:Button ID="btn_dwn" runat="server" OnClick="btn_dwn_Click" style="z-index: 1; left: 657px; top: 443px; position: absolute; height: 31px; width: 90px;" Text="Download" BackColor="#000066" BorderColor="#CCCCCC" BorderStyle="Groove" Font-Size="Medium" ForeColor="White" />
<asp:Panel ID="Panel2" runat="server" GroupingText="CLOTHO LICENSE" style="z-index: 1; left: 401px; top: 539px; position: absolute; height: 220px; width: 359px; right: 146px" ForeColor="#000066">
<br />
<br />
<asp:TextBox ID="txtbox_clotho" placeholder="Search by Mac Address" runat="server" Height="21px" style="margin-left: 45px" Width="217px" BorderColor="#333333" BorderStyle="Solid" ></asp:TextBox>
<br />
<asp:Button ID="btn_search" runat="server" BackColor="#006699" BorderColor="Black" BorderStyle="Groove" Font-Bold="True" Font-Size="Medium" ForeColor="White" OnClick="btn_search_Click" style="z-index: 1; left: 279px; top: 58px; position: absolute; height: 30px; width: 74px" Text="Search" />
<br />
<br />
<asp:ListBox ID="lstbox_clotho" runat="server" Height="81px" style="margin-left: 47px" Width="245px" ></asp:ListBox>
<asp:ImageButton ID="imgbtn_dwn" runat="server" ImageUrl="~/images/download.png" Height="49px" Width="50px" OnClick="imgbtn_dwn_Click" />
<br />
<br />
this is my asp.net code:
I want to show alert message when the search result invalid..
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Many problems! Let me dissect and show them to you:
First of all, why did you create a variable to hold the text, when you are again going to use the same object's Text property?
string search=txtbox_clotho.Text;
if (txtbox_clotho.Text != "")
Either remove the variable, or use the variable here. Tip: Remove the variable.
Secondly, if you have a look at the block where your alert-dialog's code is present?
else
{
Response.Write("<script>alert('For this Wafer ID Report is Not Generated');</script>");
}
How would you expected it execute when your condition is so wrong? "if (txtbox_clotho.Text != "")". The condition tells that the script would only be written, if the search term is empty; not invalid. Also, it doesn't work with the search result, it is applied to the search term (if I understand correctly).
Solution to this is, to re-write the code. Who wrote the code, so back? Where he was creating extra scopes (inside the if block), writing an entirely opposite condition and implement a very bad design, writing the script based on a Response.Write is always recommended not to be done. The code seriously needs some rewriting.
Explain the scenario, we can help you put some effort in it.
The sh*t I complain about
It's like there ain't a cloud in the sky and it's raining out - Eminem
~! Firewall !~
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Thank you for kind sharing.
I wanted to display files from server to list box. I also wanted to put search button to search the files. the search button must be search from all directories or subfolders. if the file not exist in the server it must show an alert message.
Now, my problem is I do not know how to show alert message in c#...Could you pls help...
asp.net code:
<asp:TextBox ID="txtbox_clotho" placeholder="Search by Mac Address" runat="server" Height="21px" style="margin-left: 45px" Width="217px" BorderColor="#333333" BorderStyle="Solid" ></asp:TextBox>
<br />
<asp:Button ID="btn_search" runat="server" BackColor="#006699" BorderColor="Black" BorderStyle="Groove" Font-Bold="True" Font-Size="Medium" ForeColor="White" OnClick="btn_search_Click" style="z-index: 1; left: 279px; top: 58px; position: absolute; height: 30px; width: 74px" Text="Search" />
<br />
<br />
<asp:ListBox ID="lstbox_clotho" runat="server" Height="81px" style="margin-left: 47px" Width="245px" ></asp:ListBox>
<asp:ImageButton ID="imgbtn_dwn" runat="server" ImageUrl="~/images/download.png" Height="49px" Width="50px" OnClick="imgbtn_dwn_Click" />
<br />
c# code:
<pre lang="cs">using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Collections;
namespace wsmfgit
{
public partial class downloadsoftware : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
DirectoryInfo info = new DirectoryInfo(@"\\192.168.5.10\fbar\TOOLS\ProbingApps\ProbingSystem\DesktopCopyTemp");
FileInfo[] Files = info.GetFiles("*.*");
foreach (FileInfo file in Files)
{
ListBox1.Items.Add(file.Name);
}
}
protected void imgbtn_home_Click(object sender, ImageClickEventArgs e)
{
Response.Redirect("default.aspx");
}
protected void btn_dwn_Click(object sender, EventArgs e)
{
string File = ListBox1.SelectedValue;
Response.ContentType = ContentType;
Response.AppendHeader("Content-Disposition", "attachment; filename=" + Path.GetFileName(File));
Response.End();
}
protected void btn_search_Click(object sender, EventArgs e)
{
lstbox_clotho.Items.Clear();
string search = txtbox_clotho.Text;
{
string[] licfiles = Directory.GetFiles(@"\\192.168.5.10\fbar\TOOLS\ProbingApps\ProbingSystem\Clotho_License", "*" + txtbox_clotho.Text + "*.lic", SearchOption.AllDirectories);
foreach (string file in licfiles)
{
lstbox_clotho.Items.Add(new ListItem(Path.GetFileName(file), file));
}
{
txtbox_clotho.Text = "";
}
}
}
protected void imgbtn_dwn_Click(object sender, ImageClickEventArgs e)
{
string licfiles = lstbox_clotho.SelectedValue;
Response.ContentType = ContentType;
Response.AppendHeader("Content-Disposition", "attachment; filename=" + Path.GetFileName(licfiles));
Response.End();
}
}
}
</pre>
Thank you.
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Only the language being used is C#, the framework that you are using is ASP.NET Web Forms. So, consider looking for an answer in ASP.NET Web Forms framework, not C#. In C# there are many ways to show a dialog,
new MessageBox("Hello").Show();
new MessageDialog("Hello").ShowAsync();
The one you are looking for is ASP.NET based, which is for sure, alert('hello'). The thing is that you are sending the alert box to the client, do not do this. Alerts must be shown once the page has been loaded, in case if there is an error. Do not show a popup as soon as the page loads.
Try this:
- Send an ajax request to the web page, to find the files.
- Send a response, if that response fails
This way you will implement what you want, it would allow you to use plain-JavaScript to do this.
The sh*t I complain about
It's like there ain't a cloud in the sky and it's raining out - Eminem
~! Firewall !~
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hello to everyone
i m new ,
i just want to ask, either sqlserver or mysql , which is best as well as suitable for me,
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My Preference is MySQL, but I'm not you and don't know your situation.
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The choice will depend entirely on your requirements and business case (and funds). Most beginners will choose MySQL based on cost while others will choose SQL Server based on support resources.
Both will probably do the job you require.
Never underestimate the power of human stupidity
RAH
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Hi everybody.
I have a problem, really need some helps.
I have a usercontrol1(It's using Timer.Tick of System.Windows.Forms.Timer with an Interval to redraw something follow the Interval).
I have a form. I added 2 usercontrol1 name: usercontrol1a and usercontrol1b, interval of usercontrol1a = 60ms, inter of usercontrol1b = 1000ms.
on usercontrola I draw something, on usercontrol1b I also draw something.
My problem is I want to know what happen while drawing usercontrolb come to the cycle draw of usercontrol1a.
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Nothing untoward will happen as long as you aren't sharing state between the two user controls.
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