List index in C# - C# Discussion Boards

29-Mar-09 4:26

well, this is bad idea to do this on sites...but a little hint, that input element id is 'fld'.

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TreeView Nodes

Mohammed Elkholy29-Mar-09 3:50

Mohammed Elkholy

29-Mar-09 3:50

Hello everybody

i have a treeview it has set of nodes , i want to set some of them visable to false , but i can't find visable or enable proprty

what can i do please

thnks for help

M.Elkholy

MD_NADA

Xmen Real 29-Mar-09 4:18

29-Mar-09 4:18

no, there is no property exists in TreeView to hide a node but you can remove a node.

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Mohammed Elkholy29-Mar-09 4:30

Mohammed Elkholy

29-Mar-09 4:30

thanks for your replay

but i need the nodes hiden i cant remove it becouse i depend on it in my code

MD_NADA

Pete O'Hanlon29-Mar-09 10:29

Pete O'Hanlon

29-Mar-09 10:29

Just because you need the nodes hidden doesn't mean that you can do it - you may need to investigate a third party control to see if you can find this feature there.

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Henry Minute29-Mar-09 12:05

Henry Minute

29-Mar-09 12:05

Another possible solution is to handle the OnBeforeSelect event of the TreeView. Check the Node passed in the TreeViewCancelEventArgs and if it is one that you would like disabled, use the Cancel property from the TreeViewCancelEventArgs to stop user interaction. Of course it might be polite to give the user a notification for the reason.

Alternatively combine the above, without the user notification, with drawing the nodes that should be disabled yourself in a dimmed-out style.
Investigate the DrawMode property of the TreeView to find out how.

Henry Minute

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List index in C#

mrithula829-Mar-09 3:09

mrithula8

29-Mar-09 3:09

Hi I want to list folders,subfolders and files from all drives in a system.I tried a code which works well for C:\.I want the same for the other drives.I have listed the drives in listbox.Please give your suggestions.

private void PaintList(String sss)
        {

            try
                {
                    reader = new XmlTextReader("path.xml");

                    while (reader.Read())
                    {
                        switch (reader.NodeType)
                        {
                            case XmlNodeType.Text: //Display the text in each element.
                                //   Console.WriteLine(reader.Value);
                                String s1;
                                s1 = reader.Value;
                                String ss;
                                ss = listBox1.SelectedItem.ToString();
                                sss = ss + s1;
                                object o3 = (object)sss;

                                DirectoryInfo dire = new DirectoryInfo(sss);

                                //DirectoryInfo[] dirs = dire.GetDirectories();

                                if (dire.Exists)
                                {
                                    String[] folder;
                                    folder = Directory.GetDirectories(sss);
                                    foreach (string foldername in folder)
                                    {
                                        DirectoryInfo di = new DirectoryInfo(foldername);
                                        if (di.Exists)
                                        {
                                            String[] files;
                                            files = Directory.GetFiles(foldername, "*.exe*");

                                            //FileInfo[] fi = dire.GetFiles();

                                            foreach (String filename in files)
                                            {
                                                lvi = new ListViewItem();
                                                lvi.Text = filename;
                                                listView1.Items.Add(lvi);

                                                lvsi = new ListViewItem.ListViewSubItem();
                                                lvsi.Text = filename.Length.ToString();
                                                lvi.SubItems.Add(lvsi);
                                                //listView1.Items[0].SubItems.Insert(1, lvsi);                                           


                                            }

                                            

                                            this.Controls.Add(listView1);
                                        }
                                    }
                                }
                                break;
                        }
                    }
                }
                catch (System.Exception err)
                {
                    MessageBox.Show("Error: " + err.Message);
                }
            
        }

Re: List index in C#

Xmen Real 29-Mar-09 4:20

29-Mar-09 4:20

use Directory.GetLogicalDrives()

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Re: List index in C#

mrithula829-Mar-09 20:27

mrithula8

29-Mar-09 20:27

Hi I am getting the list of all the drives.I am able to list the files for C:\.I want to do the same for the other drives.The index of the list should change.If i use the following i have to do the same coding inside each if statement.Can you give some alternative

int r=listBox1.SelectedIndex;
if(r==0)
{
}
if(r==1)
{
}

Re: List index in C#

Xmen Real 29-Mar-09 21:47

Only MySqlParameter objects may be stored

29-Mar-09 21:47

string[] drives = Directory.GetLogicalDrives();
for(int a=0;a<drive.length;a++)>
{
//here your code
}

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naim khan29-Mar-09 2:07

naim khan

29-Mar-09 2:07

hello every one,
Well i have big problem whn i m debuging my Project. it gives me Exception"Only MySqlParameter objects may be stored".......

this is my cs file code.

public int ExecuteNonQuery(string storedProcedure, MySqlParameter[] parameterArray, MySqlParameter outputParam)
{
int result;
MySqlCommand comm = null;
string msg;

result = 0;

try
{
//ValidateConnectionString();
//conn = new SqlConnection();
//conn.ConnectionString = _connectionString;
comm = _connection.CreateCommand();
//conn.Open();

comm.CommandText = storedProcedure;
comm.CommandType = CommandType.StoredProcedure;

foreach (MySqlParameter param in parameterArray)
{
comm.Parameters.Add(param);
}
outputParam.Direction = ParameterDirection.Output;
comm.Parameters.Add(parameterArray);
result = comm.ExecuteNonQuery();
result = int.Parse(outputParam.Value.ToString());

}
this line is Exception// catch (Exception ex)
{
msg = ex.Message;
}
finally
{
comm = null;
}

// result = SqlHelper.ExecuteNonQuery(_connectionString, CommandType.StoredProcedure, storedProcedure, parameterArray);

return result;
}

please tell me what should i do solve this problem ......

reply me as soon as posible

thanks in Advance
Naim Khan

Re: Only MySqlParameter objects may be stored

Xmen Real 29-Mar-09 4:09

Re: Only MySqlParameter objects may be stored

29-Mar-09 4:09

http://www.devart.com/dotconnect/mysql/docs/Parameters.html

PIEBALDconsult29-Mar-09 4:57

PIEBALDconsult

29-Mar-09 4:57

naim khan wrote:
comm.Parameters.Add(parameterArray);

You're trying to put an array of them in; you can't do that with Add.
You could use a foreach loop to add them; that also allows you to verify that they're not null and such.

List of classes and namespaces in .Net Framework ? [modified]

Mohammad Dayyan29-Mar-09 1:41

Re: List of classes and namespaces in .Net Framework ?

29-Mar-09 1:41

Hi.

I'm gonna create a list with all classes and namespaces name in .NET Framework 3.5 (Programmatic)?
Would you guide me how I can do it ?

Thank you.

modified on Sunday, March 29, 2009 8:35 AM

Eddy Vluggen29-Mar-09 2:31

Eddy Vluggen

29-Mar-09 2:31

Mohammad Dayyan wrote:
I'm gonna create a list with all classes and namespaces name in .NET Framework 3.5 ?

Why?

Mohammad Dayyan wrote:
Would you guide me how I can do it ?

Not guide you, but I can suggest two starting points for your research;
- Reflection
- Scraping the MSDN site[^]

I are troll Smile | :)

Re: List of classes and namespaces in .Net Framework ?

Mohammad Dayyan29-Mar-09 2:38

Re: List of classes and namespaces in .Net Framework ?

29-Mar-09 2:38

Programmatic !

Eddy Vluggen29-Mar-09 2:44

Eddy Vluggen

29-Mar-09 2:44

Mohammad Dayyan wrote:
Programmatic !

I guessed as much since you're on a programming forum. Let me rephrase;

- Reflection
That's like asking the ".NET Framework" that's installed on your PC what the names of the classes are that are in it. It's like asking the system itself, "what's the stuff inside you?"

- Scraping MSDN
That's like programmatic reading the website of Microsoft that lists and describes your classes. This way you'd be building something that reads webpages.

You still haven't answered my original question; why do you want to make this list? Smile | :)

I are troll Smile | :)

Re: List of classes and namespaces in .Net Framework ?

Giorgi Dalakishvili29-Mar-09 2:35

Giorgi Dalakishvili

29-Mar-09 2:35

You can use Reflection to iterate through all classes and namespaces in the assemblies you wish to explore.

Giorgi Dalakishvili

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Re: List of classes and namespaces in .Net Framework ?

Mohammad Dayyan29-Mar-09 2:50

Re: List of classes and namespaces in .Net Framework ?

29-Mar-09 2:50

So I ought to use a File Explorer to explore all assemblies and then get the classes name with Reflection ?

PIEBALDconsult29-Mar-09 5:05

PIEBALDconsult

29-Mar-09 5:05

You could use a System.IO.DirectoryInfo to iterate "%SystemRoot%\Microsoft.NET\Framework\*.dll" and use Reflection to load each assembly and iterate all the classes therein, but why would you want to? Is it homework? Confused | :confused:

Re: List of classes and namespaces in .Net Framework ?

Mohammad Dayyan29-Mar-09 5:08

Re: List of classes and namespaces in .Net Framework ?

29-Mar-09 5:08

PIEBALDconsult wrote:
Is it homework?

No, Just for training Big Grin | :-D

and writing a program for colorize codes.

PIEBALDconsult wrote:
"%SystemRoot%\Microsoft.NET\Framework\*.dll"

It's firm in all kind of Windows ?

Mohammad Dayyan29-Mar-09 6:01