C# Discussion Boards - CodeProject

here is code :

string string1 = "[Hi All]";
string1 = string1.Replace("[","").Replace("]","").Replace(" ","");

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128 bit encrypted signature, crack if you can

Hi All,

I want to activate a form when its deactivated. I have tried with this.Activate() in Form1_Deactivate() event. This did n't work for this task.

Could any body help in this task?

Thanks,
SMARTech

see this

<br />
    Private Function CheckExistance(ByVal strFormname As String) As Boolean<br />
        'determine if the form already exists<br />
        Dim frmtest As Form<br />
        Dim blnFound As Boolean = False<br />
        'does form already Exists?<br />
        For Each frmtest In Me.MdiChildren<br />
            With frmtest<br />
                If .Name = strFormname Then<br />
                    .Activate() 'Activate Previous instance.<br />
                    blnFound = True<br />
<br />
<br />
                End If<br />
            End With<br />
        Next<br />
        Return blnFound<br />
<br />
    End Function<br />
<br />

And use the Above Function Like this

<br />
     Dim blnFormExists As Boolean = False<br />
<br />
                blnFormExists = CheckExistance("Form1")<br />
                If Not blnFormExists Then<br />
                    Dim objform1 As New Form1<br />
                    With objform1 <br />
                        .MdiParent = Me<br />
                        .Show()<br />
                    End With<br />
                End If<br />

Hope it helps

Vuyiswa Maseko,

Sorrow is Better than Laughter, it may Sadden your Face, but It sharpens your Understanding

VB.NET/SQL7/2000/2005
http://vuyiswamb.007ihost.com
http://Ecadre.007ihost.com
vuyiswam@tshwane.gov.za

hmmm.... its C# forum Smile | :)

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thanks for your quick response,

but its not working for me.I'l explain the case little bit clear.
Suppose, Form1 is running. If we open task manager also, the focus should be on Form 1 only but it should not allow us to access task manager,

any idea please

Thanks in advance
SMARTech

AFAIK, there's no way to prevent access to Task Manager. It's a separate application running in it's own process space, so there will always be a way to get to it. Similarly, you can't prevent people getting access to other applications - it would be a very poor design if you could because this would interfere with the way people want to work. In other words, if you could do this there would be nothing to stop a virus writer from ruining your program.

Deja View - the feeling that you've seen this post before.

My blog | My articles

I agree with Pete, this is generally a bad idea. If you really need it, check out SetForegroundWindow and MainWindowHandle API functions at www.pinvoke.net

I'm pretty sure you can't deal with taskmanager though - for obvious reasons.

Dave

Hy everybody,

knows anyone a good Gantt-Control?

thanks
sunspeed

http://www.exontrol.com/exg2antt.jsp[^]

or

http://www.codeproject.com/KB/webforms/EventCalendarControl.aspx[^]

These are the first two results of Google Search.

Vasudevan Deepak Kumar
Personal Homepage
Tech Gossips

A pessimist sees only the dark side of the clouds, and mopes; a philosopher sees both sides, and shrugs; an optimist doesn't see the clouds at all - he's walking on them. --Leonard Louis Levinson

Thanks for your reply.

I asked Mr. Google in the last weeks too and he presented me your suggestions.
You could be sure, that I don´t ask Questions or request help, before I tried anything. Wink | ;)

Thanks anyway.

cheers
sunspeed

I Execute "select * from dbo.Employees for xml auto" in sqlServer.
C# Develope:
SqlConnection sqlCon = new SqlConnection(@"server=JASON-FREE\SQL2K;database=Northwind;uid=sa;pwd=**");

SqlCommand sqlComm = new SqlCommand();
sqlComm.CommandType = CommandType.Text;
sqlComm.CommandText = "SELECT * FROM Employees for xml auto";
sqlComm.Connection = sqlCon;
sqlCon.Open();
//then how to write?
XmlReader xr = sqlComm.ExecuteXmlReader();//Is right?

You can fill a DataSet and use WriteXML() method.

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

My Website | Ask smart questions

Hi friend,
I have one datagridview.

-----------------------------------------------------
DataGridView dataGridView1 = new DataGridView();
dataGridView1.Size = new System.Drawing.Size(220, 150);
dataGridView1.TabIndex = 0;
DataGridViewCheckBoxColumn checkboxColumn = new DataGridViewCheckBoxColumn();
checkboxColumn.Name = "CheckBox";
checkboxColumn.Width = 60;
dataGridView1.Columns.Insert(0, checkboxColumn);
dtaGridView1.DataSource = dt; // dt is a datatable ref which have some data from database
----------------------------------

now i want one more column be there for true false value;
for example if datatable return 5 values to datagridview1 it shows all values
but if user check on any of checkbox of any row i want true/false (0,1) value in corresponding third column. whose name would be "TrueFalse".

so how to add another column..

Hope you understand my problem.

Thanks lot.

add column in DataTable then bind...

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Hi,

I want to communicate to a modem from c# code. If any of you have idea about implementing this please share with me.

Thanks in advance

Prajin

Take at loot at this link: http://www.codeproject.com/KB/IP/#Internet%20&%20Network%20-%20Dialup[^]

There you find several articles about dialing..

Hello Friends,

I want to create the multilevel tree view in windows application using c#2.0.

I want to add the nodes in tree view form .
If one node has its child then that should be added under that parent node.

Which I am not able to do.

Regards,

rahul saini

use

TV.Nodes.Add();

to add a node in treeview,
and google, for more info

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hi,
Thanks for your rply.
Actually I added the nodes in TV but not able to add child node under its parent node.

I am not able to find its parent node. To find I am using this :

treeNode findNode = new treeNode();
findNode = myNode.Nodes.Find(objReader["catId"].ToString(), true);

but giving the following error :

Cannot implicitly convert type 'System.Windows.Forms.TreeNode[]' to 'System.Windows.Forms.TreeNode'

Regards,

rahul saini

Find() return type is TreeNode[] so how can you assign TreeNode[] to TreeNode

The code will be :

TreeNode[] TN = myNode.Nodes.Find(objReader["catId"].ToString(), true);

to add node as child node, here is a sample

TV.Nodes[<Index Of Parent Node>].Nodes.Add()

hope this will help

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%^]*IRXD#@GKCQ`R\^SF_WcHbORY87??6?N8?BcRAV\Z^&SU~%CSWQ@#2
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Thanks for this.

The error does't come again.

But not sure whether it finds the search node in treeNode.

Actually I m using the following code for populating the tree.

But not able to do as all the nodes are comming on same level.
If any node has child then its chils will be added under that.Not successed in doing this.

private void createTreeView2(string id)
{
TreeNode myNode = new TreeNode();
TreeNode findNode = new TreeNode();
string connStr = connString;
SqlConnection myConn = new SqlConnection(connStr);
string sqlQuery = "SELECT * from article where parentId='" + id + "'";
myConn.Open();
SqlCommand myCommand = new SqlCommand(sqlQuery, myConn);
SqlDataReader objReader = myCommand.ExecuteReader();

while (objReader.Read())
{

myNode = new TreeNode();

myNode = myNode.Nodes.Add(objReader["articleId"].ToString(), objReader["articleName"].ToString());
TreeNode[] findNode = myNode.Nodes.Find(objReader["articleId"].ToString(), true);

tvArticle.Nodes.Add(myNode);
if (isChild(objReader["articleId"].ToString()))
{

createTreeView2(objReader["articleId"].ToString());
}

}

}

This is my requirement.

rahul saini

ah, can you explain in details what exactly you want...as without knowing exactly, i cannot tell where is the problems

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-Electronics
-TV
-Screen
58 CM
62 CM
68 CM
-Stereo
-withFm
-Washing
-washingMachine
-drymachine
Here are 4 levels but this could be any number of levels. What we want is to display this in tree view (+, -).

Following is the sample database.
articleID(auto incrementID) parentArticleId articleName status
1 0 Electronics A
2 0 Washing A
3 1 TV A
4 1 Stereo A
5 2 washingMachine A
6 2 dryMaching A
7 3 Screen A
8 7 58 cm A
9 7 62 Cm A
10 7 68cm A
11 4 With Fm A

This is the explanation of the requirement.

Regards,

rahul saini

here is simple code :

if (objReader["parentArticleId"] == 0)
               TV.Nodes.Add(objReader["articleId"].ToString(), objReader["articleName"].ToString());
           else
           {
               TreeNode[] findNode = TV.Nodes.Find(objReader["articleId"].ToString(), true);
               findNode[0].Nodes.Add(objReader["articleId"].ToString(), objReader["articleName"].ToString());
           }

hope it will work

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%^]*IRXD#@GKCQ`R\^SF_WcHbORY87??6?N8?BcRAV\Z^&SU~%CSWQ@#2
W_AD`EPABIKRDFVS)EVLQK)JKSQXUFYK[M`UKs*$GwU#(QDXBER@CBN%
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Hi,

I wanted to find out the user name of the application.
Example: user name: rozhanin
I looked up on the net and i find answers which return the login name (dz2344).
I used the Active Directory and was able to find out the name (rozhanin), but this does not work on some computers. Frown | :(

Is there any other method to find the user name.
your help will be greatly appreciated.

Thanks!!