reading third party Snap-in information in MMC programatically - .NET (Core and Framework) Discussion Boards

ninodago13-Feb-06 5:05

13-Feb-06 5:05

Hi to all. I have a problem with my thesis. I'm realizing an application with VS .Net 2003 for PDA in C#.
I have a catalog stored into the PDA and I want to navigate into it.
I've builded a database which consists of 4 important tables: three categories tables (First, Second and Third) and the "Products" table.
I use a ListView object to navigate inside the categories. The code is this (I bolded the important part):

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

using System.Data.SqlServerCe;

using System.Data.SqlClient;

using System.Data;

using System.Reflection;

using System.IO;

namespace SmartDeviceApplication3

{

///

/// Form per sfogliare il catalogo - Form to navigate inside the catalog

///

public class FormSfogliaCatalogo : System.Windows.Forms.Form

{

private System.Windows.Forms.Panel panel1;

private System.Windows.Forms.Label label8;

private System.Windows.Forms.Label label7;

private System.Windows.Forms.Label label6;

private System.Windows.Forms.Label label5;

private System.Windows.Forms.PictureBox pictureBox3;

private System.Windows.Forms.PictureBox pictureBox2;

private System.Windows.Forms.PictureBox pictureBox1;

private System.Windows.Forms.PictureBox pictureBox4;

private System.Windows.Forms.MainMenu mainMenu1;

private System.Windows.Forms.ListView listViewCatalogo;

public FormSfogliaCatalogo()

{

//

// Required for Windows Form Designer support

//

InitializeComponent();

listViewCatalogo.Activation = ItemActivation.OneClick;

listViewCatalogo.View = System.Windows.Forms.View.SmallIcon;

//Declare the connection variable

SqlCeConnection sqlConn1 = new SqlCeConnection();

try

{

// Open a connection to the database

sqlConn1.ConnectionString = "Data Source =\\My Documents\\db.sdf";

sqlConn1.Open();

SqlCeCommand searchCommand = new SqlCeCommand();

searchCommand.Connection = sqlConn1;

searchCommand.CommandText = "SELECT * FROM TIPOLOGIA_PRIMARIA"; // it means select * from first category

// Execute and return the rows in the data reader object

SqlCeDataReader dR;

dR = searchCommand.ExecuteReader(CommandBehavior.CloseConnection);

int nFields = dR.FieldCount;

// Setup the columns in the listview using the fields in the table

listViewCatalogo.Clear();

listViewCatalogo.Columns.Add("Categoria", -1, HorizontalAlignment.Left);

// Fill the rows in the listview using the data in the rows

int nRow = 0;

while (dR.Read())

{

// Create an array of subitems for quick insertion

// The subitems will be all fields in the row except for

// the first field

String [] subitems = new String[nFields];

subitems[0] = dR[3].ToString();

// Insert a new item into the listview, and add the subitems at

// the same time. The item will be the first field in the row

ListViewItem item = new ListViewItem(subitems);

listViewCatalogo.Items.Add(item);

ImageList imageListSmall = new ImageList();

imageListSmall.ImageSize = new Size(30,30);

imageListSmall.Images.Add(LoadImage("Dir.bmp"));

listViewCatalogo.SmallImageList = imageListSmall;

listViewCatalogo.Items[nRow].ImageIndex = 0;

++nRow;

}

dR.Close();

}

catch (Exception ex)

{

// If an error occured alert the user

MessageBox.Show("Error: " + ex.Message);

}

finally

{

// Close the connection if necessary

if (sqlConn1.State == System.Data.ConnectionState.Open)

sqlConn1.Close();

}

//

// TODO: Add any constructor code after InitializeComponent call

//

}

///

/// Clean up any resources being used.

///

protected override void Dispose( bool disposing )

{

base.Dispose( disposing );

}

#region Windows Form Designer generated code

///

/// Required method for Designer support - do not modify

/// the contents of this method with the code editor.

///

private void InitializeComponent()

{

System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(FormSfogliaCatalogo));

this.listViewCatalogo = new System.Windows.Forms.ListView();

this.panel1 = new System.Windows.Forms.Panel();

this.label8 = new System.Windows.Forms.Label();

this.label7 = new System.Windows.Forms.Label();

this.label6 = new System.Windows.Forms.Label();

this.label5 = new System.Windows.Forms.Label();

this.pictureBox3 = new System.Windows.Forms.PictureBox();

this.pictureBox2 = new System.Windows.Forms.PictureBox();

this.pictureBox1 = new System.Windows.Forms.PictureBox();

this.pictureBox4 = new System.Windows.Forms.PictureBox();

this.mainMenu1 = new System.Windows.Forms.MainMenu();

//

// listViewCatalogo

//

this.listViewCatalogo.HeaderStyle = System.Windows.Forms.ColumnHeaderStyle.None;

this.listViewCatalogo.Location = new System.Drawing.Point(0, 56);

this.listViewCatalogo.Size = new System.Drawing.Size(256, 216);

this.listViewCatalogo.SelectedIndexChanged += new EventHandler(this.listViewCatalogo_SelectedIndexChanged);

this.Controls.Add(listViewCatalogo);

//

// panel1

//

this.panel1.BackColor = System.Drawing.Color.Gainsboro;

this.panel1.Controls.Add(this.label8);

this.panel1.Controls.Add(this.label7);

this.panel1.Controls.Add(this.label6);

this.panel1.Controls.Add(this.label5);

this.panel1.Controls.Add(this.pictureBox3);

this.panel1.Controls.Add(this.pictureBox2);

this.panel1.Controls.Add(this.pictureBox1);

this.panel1.Controls.Add(this.pictureBox4);

this.panel1.Size = new System.Drawing.Size(256, 56);

//

// label8

//

this.label8.Font = new System.Drawing.Font("Microsoft Sans Serif", 7.25F, System.Drawing.FontStyle.Regular);

this.label8.ForeColor = System.Drawing.Color.Blue;

this.label8.Location = new System.Drawing.Point(136, 32);

this.label8.Text = "Offerte e promozioni";

//

// label7

//

this.label7.Font = new System.Drawing.Font("Microsoft Sans Serif", 7.25F, System.Drawing.FontStyle.Regular);

this.label7.ForeColor = System.Drawing.Color.Blue;

this.label7.Location = new System.Drawing.Point(32, 32);

this.label7.Size = new System.Drawing.Size(80, 20);

this.label7.Text = "Cerca prodotto";

//

// label6

//

this.label6.Font = new System.Drawing.Font("Microsoft Sans Serif", 7.25F, System.Drawing.FontStyle.Regular);

this.label6.ForeColor = System.Drawing.Color.Blue;

this.label6.Location = new System.Drawing.Point(136, 8);

this.label6.Text = "Sfoglia catalogo";

//

// label5

//

this.label5.Font = new System.Drawing.Font("Microsoft Sans Serif", 7.25F, System.Drawing.FontStyle.Regular);

this.label5.ForeColor = System.Drawing.Color.Blue;

this.label5.Location = new System.Drawing.Point(32, 8);

this.label5.Size = new System.Drawing.Size(80, 20);

this.label5.Text = "Aggiornamento";

//

// pictureBox3

//

this.pictureBox3.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox3.Image")));

this.pictureBox3.Location = new System.Drawing.Point(112, 8);

this.pictureBox3.Size = new System.Drawing.Size(20, 20);

this.pictureBox3.SizeMode = System.Windows.Forms.PictureBoxSizeMode.CenterImage;

//

// pictureBox2

//

this.pictureBox2.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox2.Image")));

this.pictureBox2.Location = new System.Drawing.Point(8, 32);

this.pictureBox2.Size = new System.Drawing.Size(20, 20);

this.pictureBox2.SizeMode = System.Windows.Forms.PictureBoxSizeMode.CenterImage;

//

// pictureBox1

//

this.pictureBox1.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox1.Image")));

this.pictureBox1.Location = new System.Drawing.Point(8, 8);

this.pictureBox1.Size = new System.Drawing.Size(20, 20);

this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.CenterImage;

//

// pictureBox4

//

this.pictureBox4.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox4.Image")));

this.pictureBox4.Location = new System.Drawing.Point(112, 32);

this.pictureBox4.Size = new System.Drawing.Size(20, 20);

this.pictureBox4.SizeMode = System.Windows.Forms.PictureBoxSizeMode.CenterImage;

//

// FormSfogliaCatalogo

//

this.ClientSize = new System.Drawing.Size(258, 270);

this.Controls.Add(this.panel1);

this.Controls.Add(this.listViewCatalogo);

this.Menu = this.mainMenu1;

this.Text = "Catalogo";

}

#endregion

public void listViewCatalogo_SelectedIndexChanged(object sender, System.EventArgs e)

{

int sum = listViewCatalogo.SelectedIndices.Count;

int i;

i = listViewCatalogo.SelectedIndices[0];

if(listViewCatalogo.Items[i].Selected == true)

{

//to test the program

FormProdotto frm = new FormProdotto(i);

frm.Show();

return;

}

}

...

}

}

There are some problems:

1. If I deploy, I have no errors, but in executing phase I have error because the initialization of the listViewCatalogo.SelectedIndexChanged event is not correct, because it needs the items of the listview which are created dynamically (inside the "while dR.Read" clause);

2. If I put the eventhandler inside the "while clause", I have the problem that, for each row the listview creates dynamically, there is a call to my event (so I have X calls while I should have just one call, corresponding to the single item clicking).

I don't know where to initializes my event. Does anyone have a suggest?

Thank you.

Greetings from Italy

Nino

PS: Sorry for my bad English....

Re: Handling Events inside a "while" clause

HumanOsc13-Feb-06 5:49

HumanOsc

13-Feb-06 5:49

1.) You can use the SelectedIndex Property to check if an item is selected...

<br />
if(listView.SelectedIndex == -1)<br />
  return;<br />

2.) It's recommend to disabling the updateing mechanism when you are adding items...

<br />
// disable updating mechanism<br />
listView.BeginUpdate();<br />
<br />
while(...)<br />
{<br />
// adding items here<br />
}<br />
<br />
// enable updating mechanism<br />
listView.EndUpdate();<br />
<br />

By the way you should named you variables more significant...
Wink | ;)

Re: Handling Events inside a "while" clause

ninodago14-Feb-06 1:00

ninodago

14-Feb-06 1:00

HumanOsc wrote:
1.) You can use the SelectedIndex Property to check if an item is selected...

if(listView.SelectedIndex == -1)
return;

I don't have the definition SelectedIndex inside ListView. ('System.Windows.Forms.ListView' does not contain a definition for 'SelectedIndex')... I use VS .Net 2003 with CF 1.0.
I used this code, but I'm not sure if it has the same effect...
if (listViewCatalogo.SelectedIndices[0] == -1)
return;

Another question. In which point of the program should I use this code? Inside the definition of listViewCatalogo_SelectedIndexChanged event?

When I deploy I have the same errors. If I declare the control inside or outside the while clause I have this message: Error: index (I mean, the variable passed to the last testing form(FormProdotto).

Re: Handling Events inside a "while" clause

Guffa13-Feb-06 6:03

Guffa

13-Feb-06 6:03

Show only the relevand code, and use the pre tag to make it readable.

---
b { font-weight: normal; }

Re: Handling Events inside a "while" clause

ninodago13-Feb-06 22:55

ninodago

13-Feb-06 22:55

sorry, it was my first message and it was very important for me, I'll remember for the next time!
thank you

Re: Handling Events inside a "while" clause

HumanOsc14-Feb-06 1:27

HumanOsc

14-Feb-06 1:27

Ok, sorry it was my fault... Sometimes i mix two different classes...

I mean the SelectedItems Property...

<br />
if(listView.SelectedItems.Count == 0)<br />
  return;<br />

You should check the collection if it's contains items, before you get anyone...

Well, in your app in the SelectedIndex_Changed handler...

<br />
// get sure that one item is selected<br />
if(listViewCatalogo.SelectedItems.Count == 0)<br />
  return;<br />
<br />
i = listViewCatalogo.SelectedIndices[0];<br />
<br />

-- modified at 7:28 Tuesday 14th February, 2006

Re: Handling Events inside a "while" clause

ninodago14-Feb-06 6:02

ninodago

14-Feb-06 6:02

Thanks a lot, I made the changes and now the running is quite good!

Bye
Nino

Look Torino 2006 - - - - - FORZA ITALIA!!!

reading third party Snap-in information in MMC programatically

krompo13-Feb-06 4:36

krompo

13-Feb-06 4:36

hi everyone,

I would need to get access to third party snapins in MMC so I can read information from these MMC snapins and store this information somewhere else into a text file. I don't need to modify this information, I only need to retrieve it, so I don't need to work with MMC manually in GUI form but can create reports in text file form from these MMC snapins. Do you have any idea if there is a way how to get this information from 3rd party snapins programatically (if possible in a consistent way) ?

thanks & regards,

krompo

Socket Exception Delay??

ckaneAV10-Feb-06 9:04

ckaneAV

10-Feb-06 9:04

i am trying to build a "missed message" queue on a C# TCP server. many
of the devices connecting are mobile and may drop out in bad signal
areas. i want to store any messages missed for when they reconnect.

so far....it takes activity on the client end to initialize the close.
isnt there a check when the server sends a socket.send to a client that
has lost connection? it takes a few minutes for the exception to get
hit, and i am losing vital time.

is there a way for as soon as the the server attempts Socket.Send it
can tell if the device on the other end still has an active connection?

even Socket.Poll() has quite a delay.

i have been testing with desktops. I connect two workstations to the
server and when i chat back and forth, i unplug one from the network.
it takes at least two minutes for the server to recognize that one
client is disconnected while the still-connected client is sending
messages. it seems they are just going nowhere.

activex .ocx with c# and visual studio .net

kopi_b10-Feb-06 3:14

kopi_b

10-Feb-06 3:14

please,

how can i make an activex control (i need an ocx file! and not a dll) with visual studio .net and c#?

thanks! kopi_b

Re: activex .ocx with c# and visual studio .net

Dave Kreskowiak10-Feb-06 5:56

Dave Kreskowiak

10-Feb-06 5:56

Don't corss post in multiple forums. It's considered rude...

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

.Net Framework Security

Indu Mahadevan9-Feb-06 19:03

Indu Mahadevan

9-Feb-06 19:03

In a vb. Net application I have to set user Level Code ACcess Permission. a Program Manager user can select a user and select applications he has permission to access.
So that when next time that user loggs in he won't be able to access those applications which he has no permission. I am not able to find a way to set Userwise FileIoPermissions . Pls Help me . Confused | :confused:

Indu

Framework version issue

Lisana9-Feb-06 11:01

Lisana

9-Feb-06 11:01

I have an app created by VS2003. The launch conditions of .net framework's supportedRuntime is V1.1.4322. It can be installed in those machine had this version. I have another machine that only have the newest version framework V2.0. When I installed it, it asks me to install the .net framework V1.1.4322. I think that should not happen when the computer has the newest version .net framework in it. But my app can't be installed. Is there anybody know how to solve this issue?

THANKS!!

Lisa

Re: Framework version issue

Dave Kreskowiak10-Feb-06 6:06

Dave Kreskowiak

10-Feb-06 6:06

You might want to test your application under the 2.0 Framework before you worry about its installation. Breaking Changes in .NET Framework 2.0[^].

You'll just have to change the installer for the app. You could get away with removing the .NET Framework dependancy or possibly just changing the version of the dependancy to 2.0.(something I can't remember offhand).

The code itself will launch (by default) under the latest runtime if the specified runtime is not available. That doesn't mean that it'll work 100% the same as it did under 1.1.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Framework version issue

Lisana10-Feb-06 6:16

Lisana

10-Feb-06 6:16

I have changed the version of the dependancy to 2.0.50727, and it works fine under the 2.0 framework. But when I test in another workstation only have .net framework 1.1. The installation request it to install the .Net Framework 2.0, but my application should run under .net framework 1.1 without any problem.

How can I work around this? When the workstation has .Net framework version 1.1 and up, it doesn't need to install any more .net framework.

THanks, Dave!

Lisa

-- modified at 12:17 Friday 10th February, 2006

Re: Framework version issue

Dave Kreskowiak10-Feb-06 9:19

Dave Kreskowiak

10-Feb-06 9:19

Whoops! My bad! It's a Dependancy, so without that version, the app won't install. You can put the version number back to the original value, then set the AllowLaterVersions property of the .NET Framework dependency to True. By doing this, you're specifying that your app needs at least version 1.1 of the Framework installed. Newer versions are acceptable for installation.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Framework version issue

Lisana10-Feb-06 10:14

Lisana

10-Feb-06 10:14

Hello, Dave..That's so funny..I can't find the AllowLaterVersions property in Launch conditions -> .Net Framework ->property. There are only 4 propperties (Name, InstallUrl, Message, SupportedRuntime) and I'm using VS2003 version. Do you have any idea?

Lisa

Re: Framework version issue

Dave Kreskowiak10-Feb-06 14:07

Dave Kreskowiak

10-Feb-06 14:07

Yikes! I though you were using 2005. That property doesn't exist in 2003.
About the best option you have, using the Setup and Deployment project in 2003, is to remove the dependancy entirely. The MSI will no longer check to see if the .NET Framework is installed.

You're better off using one of the other Installer builders or bootstrappers.

Google results[^]

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Recomend me a profiler for 2.0

ika29-Feb-06 8:27

ika2

9-Feb-06 8:27

The Subject says everything. Could you recommend me a good profiler (time and memory) for my programm written in C# 2.0???

thanks!!

regards

Switching .Net version in Visual Studio

redkite9-Feb-06 4:10

redkite

9-Feb-06 4:10

Hi,
Simple question for experienced programmers, I think.

I used to work with Visual Studio 2003 in combination with .NET framework 1.1
The development webserver now runs .NET framework 2.0

Now I've installed .NET Framework 2.0 on my development computer.
But when I try to create a new C# web application project on the server, VS tells me that the server does not have .NET framework 1.1, which is true.

What do I have to do to make .NET framework 2.0 the default framework in Visual Studio for new projects?

Greetings
Henk

Re: Switching .Net version in Visual Studio

Dave Kreskowiak9-Feb-06 4:50

Dave Kreskowiak

9-Feb-06 4:50

redkite wrote:
What do I have to do to make .NET framework 2.0 the default framework in Visual Studio for new projects?

Install Visual Studio.NET 2005.

Visual Studio.NET 2002 will only compile against the .NET Framework 1.0.
Visual Studio.NET 2003 will only compile against the .NET Framework 1.1.
Visual Studio.NET 2005 will only compile against the .NET Framework 2.0.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Switching .Net version in Visual Studio

redkite9-Feb-06 5:18

redkite

9-Feb-06 5:18

Ahh.. OK. 2005 it is then.

Isn't 2005 backwards compatible with .NET 1.1 also?

Greetings
Henk

Re: Switching .Net version in Visual Studio

Dave Kreskowiak9-Feb-06 5:33

Dave Kreskowiak

9-Feb-06 5:33

2005 will not work at all with the 1.1 Framework. It's entirely dependant on the 2.0 Framework.

Remember that the compilers are NOT in Visual Studio, they're in the .NET Framework!

Most code generated by the 1.1 compilers will run under the 2.0 Framework, but there ARE breaking changes. Some 200 new classes were introduced in 2.0 and some 1200 changes made to existing classes.

Code generated by the 2.0 Framework will work under 1.1, but ONLY IF no classes and changed methods or properties were used that is specific to the 2.0 Framework.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

why do I get that error?

gongolina9-Feb-06 2:43

gongolina

9-Feb-06 2:43

I built an application in C# and add it a deployment project.
The Installation goes fine, but when I'm lunching the application it crashes and giving me this error:
EventType: clr20r3 P1: radioclocknew.exe P2: 1.0.0.0
P3: 43ea5327 P4: system.windows.forms P5: 2.0.0.0 P6: 4333aefa
P7: 1979 P8: 2 P9: pszqoadhx1u5zahbhohghldgiy4qixhx

On my computer it works great, it happens when I install it on other computer

Re: why do I get that error?

Dave Kreskowiak9-Feb-06 4:49

Dave Kreskowiak

9-Feb-06 4:49

I've never seen an error formatted like this. My first question would be does the other computer have the same version of the .NET Framework installed as you developed it under? It appears you're developed it under 2.0.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.