tree view question c# - C# Discussion Boards

zaboboa22-Aug-05 3:47

22-Aug-05 3:47

Hello,

I have a groupBox, and I want to add a HScrollBar, how can I implement the scrolling action if I have the controls within that groupBox, that are out of the groupBox's client area?

Thank you

Re: Horizontal Scroll Bar

miah alom22-Aug-05 4:58

miah alom

22-Aug-05 4:58

AutoScroll = true;

Re: Horizontal Scroll Bar

zaboboa22-Aug-05 6:17

zaboboa

22-Aug-05 6:17

Unfortunatelly GroupBox does not have AutoScroll property.

Re: Horizontal Scroll Bar

Dan Neely22-Aug-05 7:06

Dan Neely

22-Aug-05 7:06

Can you put a panel in the GB, and add your controls to the panel instead?

Re: Horizontal Scroll Bar

zaboboa22-Aug-05 7:29

zaboboa

22-Aug-05 7:29

That's exactly what I am going to do. Thank you.

Grading out DataGrid

zaboboa22-Aug-05 3:18

zaboboa

22-Aug-05 3:18

Hello,

Is there a way of GradingOut DataGrid, so if it's Enabled = false, how can I show that it is disabled. Because my grid is in the pannel, so if I disable the pannel, grid gets disabled, however it looks like it's enabled.
I would want something like the textbox, if it's disabled it gets (ReadOnly) appearance.

Thank you

Re: Grading out DataGrid

miah alom22-Aug-05 4:57

miah alom

22-Aug-05 4:57

Do this in DataGridTextBoxColumn wire up GrayOutCellEvent

when the status of the Grid changes to Enabled = false.

protected override void Paint(System.Drawing.Graphics g, System.Drawing.Rectangle bounds, System.Windows.Forms.CurrencyManager source, int rowNum, System.Drawing.Brush backBrush, System.Drawing.Brush foreBrush, bool alignToRight)
{
foreBrush = SystemBrushes.HighlightText;
.....
if (
this.GrayOutCellEvent != null &&
!this.DataGridTableStyle.DataGrid.IsSelected(rowNum)
)
{
GrayOutCellEventArgs grayOutCellEventArgs = new GrayOutCellEventArgs(rowNum);
this.GrayOutCellEvent(this, grayOutCellEventArgs);
if (grayOutCellEventArgs.IsGrayOut)
{
backBrush = SystemBrushes.ControlLight;
}
}
}

tree view question c#

fady_sayegh22-Aug-05 3:13

fady_sayegh

22-Aug-05 3:13

hi to all,

i need to populate a tree view with data but i have some restriction

in fact my relation parent ==> in the database look like this :

01 root
01MM module (child of root)
01MMFR form (child of module)

i can't found a trick to populate my treeview
does anyone has suggestions

thanks in advance and best regards

fady

Re: tree view question c#

miah alom22-Aug-05 5:51

miah alom

22-Aug-05 5:51

Can you please post the schema of the table in the database holding the parent child relationship.

Re: tree view question c#

Robert Rohde22-Aug-05 8:56

Robert Rohde

22-Aug-05 8:56

Lets assume you have all keys in a string array 'keys' and als names in a string array 'names':

HashTable keysToNodesHash = new HashTable();
for (int i = 0; i < keys.Length; i++) {
TreeNodeCollection nodes = treeView1.Nodes;
if (keys[i].Length > 2)
nodes = (TreeNodeCollection)hash[keys[i].SubString(0, keys[i].Length - 2)];
TreeNode newNode = nodes.Add(names[i]);
keysToNodesHash.Add(keys[i], newNodes.Nodes);
}

Haven't tested it but it should give you the basic idea. Note that this will only function properly if the nodes come in the right order (liek in your example). If this isn't true you will have to sort them before this operation.

Context Menu's

exhaulted22-Aug-05 3:03

exhaulted

22-Aug-05 3:03

Hi all, hope you can help me with a small problem.
I need to add an item to the forms drop down menu that you get when you right click the icon in the top left of the form.

Anyone know how??

Cheers

Kev

Changing the service name at installation time

ankit.singhal@gmail.com22-Aug-05 2:34

ankit.singhal@gmail.com

22-Aug-05 2:34

Hi,
I want to install multiple instance of the windows service with different name. So for that I need to read the service name at the time of installation from some config file.

Can any buddy help me out in this?

Ankit Singhal

Re: Changing the service name at installation time

miah alom22-Aug-05 5:53

miah alom

22-Aug-05 5:53

Check this out

http://www.codeproject.com/csharp/CSharpWindowsServiceInst.asp

How can I show custom string such as "N/A" in DataGrid instead (null) for null columns?

Behzad Ebrahimi22-Aug-05 2:28

Behzad Ebrahimi

22-Aug-05 2:28

How can I show custom string such as "N/A" in DataGrid instead (null) for null columns?
My datagrid data will load by a DataSource.

Or how can I filter sum record/field when loading fata from DataSource to DataGrid !?

Thank you

Re: How can I show custom string such as "N/A" in DataGrid instead (null) for null columns?

Behzad Ebrahimi22-Aug-05 3:51

Behzad Ebrahimi

22-Aug-05 3:51

I found it ... Suspicious | :suss:

int nColCount = dataGrid1.DataSource.Tables[0].Columns.Count;<br />
int nStyleCount = dataGrid1.TableStyles.Count;<br />
for(int nSC= 0; nSC < nStyleCount; nSC++ )<br />
 for(int nCol = 0; nCol < nColCount; nCol++ )<br />
  {<br />
    dataGrid1.TableStyles[nSC].GridColumnStyles[nCol].NullText = "N/A";<br />
  }<br />

What does .net stand for?

Tuwing.Sabado22-Aug-05 1:41

Tuwing.Sabado

22-Aug-05 1:41

hi,

What does .net stand for? or What is the .net original name?

Thanks

Re: What does .net stand for?

Anonymous22-Aug-05 2:27

Anonymous

22-Aug-05 2:27

Why not ask Billy??

Re: What does .net stand for?

Anonymous22-Aug-05 3:50

Anonymous

22-Aug-05 3:50

it stand for future;P

Re: What does .net stand for?

seee sharp22-Aug-05 18:05

seee sharp

22-Aug-05 18:05

It means DOT in the NET

Laugh | :laugh:

- ashish

Need help with PropertyGrid

TheSnakeByte22-Aug-05 0:49

TheSnakeByte

22-Aug-05 0:49

Now, I just recently found out about PropertyGrid and I think I like it.
My problem is, I can't figure out how to display my tree in a apropriate way.

My classes look like this:

class MyTreeNode
{
List mylist = new List();
public MyTreeNode[] SubNodes
{
get { return (MyTreeNode[])mylist.ToArray(); }
}

public string Name = "something";
}

I want this MyTreeNode class to display as a list of nodes; but instead of that [0] as a name it should display the node's Name-attribute. I would also like to set the value to something different.
I just can't figure out how to do that exactly.

please give me a hint.

so long.

Re: Need help with PropertyGrid

SeMartens22-Aug-05 1:36

SeMartens

22-Aug-05 1:36

Hi,

I don't know if this works, but what about overriding the ToString() method. This overridden method should return the name. Maybe this will display the name attribute.

Regards
Sebastian

Re: Need help with PropertyGrid

leppie22-Aug-05 1:43

leppie

22-Aug-05 1:43

Apply the ExpandableTypeConvertor as the TypeConvertor for that property.

^{xacc-ide 0.0.15 now with C#, MSIL, C, XML, ASP.NET, Nemerle, MyXaml and HLSL coloring - Screenshots}

Drag n Drop

Anonymous21-Aug-05 23:47

Anonymous

21-Aug-05 23:47

How to drag n drop the row of datagrid.Please help!!!

OracleClient and ADO.NET

seee sharp21-Aug-05 23:44

seee sharp

21-Aug-05 23:44

If we use System.Data.OracleClient namespace in desktop application, do we have to have Oracle client installed on the machine/desktop to access database.

- ashish

Re: OracleClient and ADO.NET

turbochimp22-Aug-05 2:34

turbochimp

22-Aug-05 2:34

Yes, version 8.1.7 or later.

Here[^] is a link to the pertinent documentation.

The most exciting phrase to hear in science, the one that heralds the most discoveries, is not 'Eureka!' ('I found it!') but 'That's funny...’

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