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I would not recommend writing your own String class; too confusing !
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There really isn't any difference. string is the C# alias for System.String, which is the actual CLR data type.
I personally use string when declaring variables and String when calling functions (like .Empty, .IsNullOrEmpty, and .Format) as I think it makes it a little clearer; but that is simply personal preference and string.Format is exactly the same as String.Format.
-----------------------------
In just two days, tomorrow will be yesterday.
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String may refer to your own class, string refers to the inbuilt string class
Keshav Kamat
India
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Hi Guys -
I am having problems dragging and dropping controls on my forms in VS2005. Nothing is locked and I am able to move them if I go into the properties window and manually change their position...but it won't allow me to grab them and move them around 
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This is just a guess, but is your app running. If you app is running I think it locks the from even through you can still see it.
Ben
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Hi.
When the new webbrowser in .NETCF 2.0 is loading, a progress bar is displayed at the base of the control.
Does anyone know how to stop this from appearing?
I'm only using the control as a HTML viewer, so I really don't want to see the progress bar everytime I send new information to the page.
Thanks.
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Hi
I have an ActiveX control which behaves well outside of the .NET environment. However when i used it via interop i can't seem to set the backcolor and forecolor properties.
Anyone any ideas?
Cheers
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AX controls don't always respond to .NET standards, such as having Fore and Back colors. This is probably settable only if the Ax control provides some means of of setting those explicitly outside the normal properties.
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Yeah, its quite strange the ActiveX Control supports BackColor and ForeColor. When they come through COM Interop - the AxInterop file exposes them as .NET Color type. The standard interop files gives an interface with them as UINT.
Neither of which work! Very frustrating considering the control works fine ouside of .NET.
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I'm sure there's a way to get this to work. What is the method/property that COM really exposes to set the back color? (e.g. not the one .NET is showing you)
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I agree...
It looks like interop is not calling through to the old property on the control.
But i am at a loss... Managed to cast it back to the original interface that exposed the backcolor as uint. Bu that didn't help.
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AJ123 wrote: Managed to cast it back to the original interface that exposed the backcolor as uint.
So setting the uint didn't work?
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Hi all,
I launch a windows application from another windows application in .net.It is launched as a process by clicking a button.
When i click the button multiple times without gap atleast 2 times or more, i need to ignore the subsequent clicks till the application is loaded completely.
How do i do this?
Thanks.
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One way to do this is create a private variable. Set this with the first click and then re-set it later. The code would be something like this:
private bool processing;
if (!processing)
{
try
{
processing = true;
}
finally
{
processing = false;
}
}
Hope that helps.
Ben
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Why not disable the button till you want to accept subsequent clicks.
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Im trying to update the content in the database but it doesnt work i dont understand why.
I commented most of the code tell me if something is unclear
Get content code:
//if creating new file use textbox1 rather then the double clicked data cell
string fns = "";
if (open == false)
{
dataGridView1.CurrentCell = this.dataGridView1[0, e.RowIndex];
fns = dataGridView1.CurrentCell.Value.ToString();
}
else
{
//use filename box (file creation)
fns = textBox1.Text;
}
// get content where name == fns
SqlConnection sql = new SqlConnection(sqlcon);
a = new SqlDataAdapter("SELECT [Content], [primkey], [Name] FROM Keeper WHERE [Name] ='" + fns + "'", sqlcon);
try
{
a.Fill(s, "Keeper");
foreach (DataRow dr in s.Tables[0].Rows)
{
dataGridView2.DataSource = s;
dataGridView2.DataMember = "Keeper";
}
//get content from datagrid insert into richtextbox
dataGridView2.CurrentCell = this.dataGridView2[0, 0];
richTextBox1.Text = dataGridView2.CurrentCell.Value.ToString();
}
catch (SqlException sqlexcp)
{
MessageBox.Show(sqlexcp.Message.ToString());
}
//close connection, reset bool, bring up editor
sql.Close();
open = false;
richTextBox1.BringToFront();
Save content:
//get content from textbox insert into datagrid
dataGridView2.CurrentCell = this.dataGridView2[0, 0];
dataGridView2.CurrentCell.Value = richTextBox1.Text;
//update DB
SqlCommandBuilder mySqlCommandBuilder = new SqlCommandBuilder(a);
a.Update(s, "Keeper");
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try to use sql interogation
i am not sure but i think you update only one dataset not the dataBase
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So how would i update the database?
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I'm new in the field of software engineering and feel kinda like depressed over the rapid change and introduction of new technologies, trends etc in this field. I know that no other training methdologies can replace the learning from a good book. However to acquire knowledge from book you gotta have a good amount of time. Unfortunately due to uncertainity of my job timing I'm unable to attend any class regularly. So I though there are few sites which offers online video trainings. Can u guys quote me a good site where I can find good amount of videos trainings etc. Like learnvisualstudio.net what do you guys suggest. Offcourse I'm willing to spend some money.
Thanks.
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Read articles on CP. You always learn something new!!
_____________________________________________________________________
Our developers never release
code. Rather, it tends to escape, pillaging the countryside all around.
The Enlightenment Project (paraphrased comment)
Visit Me at GISDevCafe
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Some employers will pay for you to attend classes to further hone skills needed to perform your job. If you do gain employment with one of these companies, ask if you could take some programming courses from a local university. They might be willing to help, and it might be free for you.
Good luck!
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But guys what about these Video training sites? any suggestion on that or any good site you wanna share.
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What is Diffgram? How it is used ?
Regards,
LEE
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