Accessing Control on my webpage - C# Discussion Boards

Re: Access variable from Global asax to a asmx page

19-Jul-07 7:15

Probabaly need to see your code, but it is a really bad idea to use a static var in global.asax. If you have an application wide varible you should use the application object, it is just like session. It can be set in an event in the global.asax or anywhere else for that matter. If the var is supose to be user specific then you need to use the session object.

Ben

ramdil19-Jul-07 23:40

ramdil

19-Jul-07 23:40

Hi
Thanks for the reply.Here is the part of my code.

XMLCacheComm = new XMLCacheComm();
In Application_Start of global asax page
Application["XMLCacheComm"] = XMLCacheComm;

and in constructor XMLSportsIn() of webservice written as
XMLCacheComm XMLCacheComm1 = Application["XMLCacheComm"] as XMLCacheComm;

and in a method of webservice,when i call
XMLCacheComm1.SendMessage()..here i am getting object reference not set to an instance of an object

Any idea

Regards
DilipRam

Re: Access variable from Global asax to a asmx page

kubben20-Jul-07 1:21

Re: Access variable from Global asax to a asmx page

20-Jul-07 1:21

When you create it in the application_start you have to assign it a variable
XMLCacheComm _xmlCacheComm= new XMLCacheComm();
In Application_Start of global asax page
Application["XMLCacheComm"] = _xmlCacheComm;

This line:
XMLCacheComm XMLCacheComm1 = Application["XMLCacheComm"] as XMLCacheComm;

You might want to double check to see if the item is there. Something like:
if (Application["XMLCacheComm"] != null)
{
XMLCacheComm XMLCacheComm1 = Application["XMLCacheComm"] as XMLCacheComm;
}
else
{
XMLCacheComm _xmlCacheComm= new XMLCacheComm();
Application["XMLCacheComm"] = _xmlCacheComm;
}

Hope that helps.
Ben

ramdil20-Jul-07 2:43

ramdil

20-Jul-07 2:43

Hi Thanks for the reply.I got out the object error.but i am not getting values inside it..inside the global i will get the count as 2 but inside webservice its count is getting as 1...why is this happening

Regards
DilipRam

Re: Access variable from Global asax to a asmx page

kubben20-Jul-07 2:48

Re: Access variable from Global asax to a asmx page

20-Jul-07 2:48

I am not that familar with the XMLCacheComm object, so I am not sure what the Count property refers to. So I am not sure why the count would be 1 or 2.

Ben

ramdil20-Jul-07 4:58

ramdil

20-Jul-07 4:58

Thanks Ben.I was assigning application variable at the initialization part.when i assigned it in section where i want actually, i am getting the value.Any way thanks for your replies.
Expecting a positive replies in future

Thanks

Regards
DilipRam

Accessing Control on my webpage

imnotso#19-Jul-07 4:06

imnotso#

19-Jul-07 4:06

Hi,

I have a web page C#, written and working.
I now need to see and validate certain controls on my page beginning with 'dt'.

In VS2005 i can happily type ...

foreach (Control ctrl in MyPage.Controls ) and it would list them and then I can use them

This doesn't work in VS2003. Any suggestions welcome?

kubben19-Jul-07 4:20

19-Jul-07 4:20

My guess would be that you don't have a page called MyPage in VS2003.

Ben

Manas Bhardwaj19-Jul-07 4:41

Manas Bhardwaj

19-Jul-07 4:41

kubben wrote:
My guess would be that you don't have a page called MyPage in VS2003

imnotso#19-Jul-07 4:54

imnotso#

19-Jul-07 4:54

If this was meant to be helpful, you are an idiot.

I've got it now though......

foreach (Control c in Page.FindControl("MyPage").Controls)

Cheers

kubben19-Jul-07 7:06

19-Jul-07 7:06

Sorry I offended you. I guess I should leave being funny up to others. I just thought something looked wrong with the MyPage.Controls. Glad you figured it out.

Ben

Keywords in c#

.NET- India 19-Jul-07 3:33

.NET- India

19-Jul-07 3:33

Hello Everyone,

Does c# uses it's own predefined keywords for input and output if yes plz let me know

Thnx in advance

Colin Angus Mackay19-Jul-07 3:35

Colin Angus Mackay

19-Jul-07 3:35

The Knowledge wrote:
Does c# uses it's own predefined keywords for input and output if yes plz let me know

Input/output to/from where?

Upcoming events:
* Glasgow: Mock Objects, SQL Server CLR Integration, Reporting Services, db4o, Dependency Injection with Spring ...

"I wouldn't say boo to a goose. I'm not a coward, I just realise that it would be largely pointless."

My website

Luc Pattyn19-Jul-07 4:11

19-Jul-07 4:11

no, the C# (or C or C++ or Java) language does not have special keywords for input/
output. They rely on classes to do your I/O. See for instance SerialPort, Graphics,
File (and all the stream stuff) etc.

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Colin Angus Mackay19-Jul-07 4:14

Colin Angus Mackay

19-Jul-07 4:14

Luc Pattyn wrote:
They rely on classes to do your I/O. See for instance SerialPort, Graphics,
File (and all the stream stuff) etc.

Aahh..... Was that what he meant? D'Oh! | :doh:

Luc Pattyn19-Jul-07 5:43

Re: changing system colors

19-Jul-07 5:43

Yes, I hope he was refering to such things as the good old IN and OUT statements in Basic
(and the corresponding assembly instructions available on several microprocessors).

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

changing system colors

Bekjong19-Jul-07 3:16

Bekjong

19-Jul-07 3:16

Hi,

I'm writing an MDI application and want to change the default systemcolors assigned to my titlebars. Does anyone know of a way of doing this?

Thanks in advance!

Standards are great! Everybody should have one!

mark_w_19-Jul-07 5:24

mark_w_

19-Jul-07 5:24

have a read of this

http://www.codeproject.com/cs/miscctrl/exdotnet.asp[^]

Re: changing system colors

Bekjong19-Jul-07 5:36

Bekjong

19-Jul-07 5:36

Thanks for the reply, but the article only provides a panel and a progressbar. Although they're really nice, what I'm looking for is to change the colors in the title bar of my child windows: In Window's classic theme they're set to the colors defined in the selected theme (blue and lightblue by default).

Standards are great! Everybody should have one!

How to remove the control?

Dotnetkanna19-Jul-07 3:11

Dotnetkanna

19-Jul-07 3:11

Hi everybody,

I Had used the below code to adding the textbox contorl dynamically and nodes in the treeview but i have no idea to how to remove the created control by using the control name onbutton click and also i have to remove the corresponding nodes in the treeview.any suggestion?

int n = 25;
int m = 1;

private void BtnAddControl_Click(object sender, EventArgs e)
{
TextBox txtBox = new TextBox();
txtBox.Text = "TextBox" + m;
txtBox.TabIndex=m;
txtBox.Tag=m;
txtBox.Location = new System.Drawing.Point(10, n);
txtBox.Size = new System.Drawing.Size(70, 20);
txtBox.Name = "TextBox" + m;

txtBox.Click +=new EventHandler(txtBox_Click);
this.Controls.Add(txtBox);

TreeNode root = null;
if (TV.Nodes.Count == 0)
{
root = new TreeNode("TextBox");
root.Nodes.Add(txtBox.Name);
TV.Nodes.Add(root);
}
else
{
TV.Nodes[0].Nodes.Add(txtBox.Name);
}

TV.ExpandAll();
n = n + 20;
m++;
}

Regards

Kanna

Martin#19-Jul-07 3:19

Martin#

19-Jul-07 3:19

Hello,

You have to iterate over the Controls Collection and compare the Name property

foreach(Control c in this.Controls)
{
    if(c.Name.Equals("TextBox"+m.ToString()))
    {
        this.Controls.Remove(c);
        break;
    }
}

All the best,

Martin

Luc Pattyn19-Jul-07 4:15

19-Jul-07 4:15

if c is the control to remove (maybe found as sender of some event), you should be
able to remove it most easily with c.Parent.Controls.Remove(c);

if you dont now c, you must iterate over it's parents controls to identify it, unless
you have setup a Hashtable/Dictionary to link the name to the Control...

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Martin#19-Jul-07 4:17

Martin#

19-Jul-07 4:17

Luc Pattyn wrote:
if c is the control to remove (maybe found as sender of some event), you should be
able to remove it most easily with c.Parent.Controls.Remove(c);

if you dont now c, you must iterate over it's parents controls to identify it.

Was this info really for me?

All the best,

Martin

Luc Pattyn19-Jul-07 4:22