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hi everybody,
i m sending value to the database from child form. In the parent form i have a listbox which is
displaying the values retrieved from database.
my problem is that when i m sending values to the database from child from updation is not shown in parent form's listbox while database is already updated. send some clue or possible send some c# code.
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you may have to clear the bindings of the listbox and re-bind data.
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Hi Groups
What is the Difference between String and string? When will we use String?
Bye
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"string" is a data type.
"String" is a Class in C#
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blumenhause wrote:
"String" is a Class in C#
Well, you are right in that System.String is class. But how you say it is... um... System.String is CLI built-in type/class. string is C# specific alias of System.String
I didn't vote but someone probably found your answer confusing. 
"Throughout human history, we have been dependent on machines to survive. Fate, it seems, is not without a sense of irony. " - Morpheus
"Real men use mspaint for writing code and notepad for designing graphics." - Anna-Jayne Metcalfe
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sorry if that was confusing.. but i think many of our members opinion clarifies this confusion.
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"String" is the class and "string" is the alias name of the String class.
I think I am right.
Regards,
Arun Kumar.A
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They're the same.
Cheers,
Vıkram.
Déjà moo - The feeling that you've seen this bull before.
Join the CP group at NationStates. Password: byalmightybob
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How can a Class and datatype be the same?
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All classes are types.
string is a synonym for System.String nothing more, nothing less.
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String is class.
string is a keyword (which is under the hood is translated to .NET class System.String)
Sincerely,
Elina
Life is great!!!
Enjoy every moment of it! 
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No difference!
string is a keyword,but String not.
string just like a shortcut for String.
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The keyword string is an alias for System.String.
I only know of two differences between using an alias keyword and the specific class name:
:: You have to have using System; to use String, otherwise you have to specify the full name System.String.
:: For some special uses of data types only the keyword works. You can for example specify that an enum should use int as internal storage type, but you can't specify System.Int32 instead.
---
single minded; short sighted; long gone;
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thanks alot for the clarification.
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String is .NET CTS type where as
string is built in C# datatype which virtually means String
just like Int32 struct and int,
Bottom line both are the same
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Hi
I'd like to know how I can open a file on the harddisk via code.
I mean opening the file in a new instance of its default associated program in windows (for example an .xls file in Excel,
not opening it via code to read from it.
thanks in advance
greetings pdluke
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Process.Start
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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After updating a row in the datagridview, the grid is re-populated. How is it possible to make the current cell the one that was just updated. Please note that if there are many records in the grid, and say record no 380 was updated, then the grid should move the pointer (current cell) to that row.
Thanks
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Hello, I have in my interface a button, "startButton" and a richtextbox "TextOutput", when I clik the startButton I want view in my richtextbox the content of a file "contload.txt" (which is in "c://") ...can you help me please
lavy
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Hi,
you can do this like that
<br />
TextOutput.Text = System.IO.File.OpenText("C:\\contload.txt").ReadToEnd();<br />
hope this helps you
greetings pdluke
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hi..
i want to serialize a Hashtable to a XML file..
how to do this..
currently i m using List<> to store objects, and serializing the List<> and its working fine..
but how to serialize a Hashtable.. plz help me..
regards,
nas
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Hi
as far as I know it's not possible to serialize a Hashtable.
I had the same problems some time ago.
You could use the Dictionary<> which is in .NET 2.0, I think.
It has the same functionality as the Hashtable.
greetings
pdluke
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try this:
Hashtable.GetObjectData Method
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i have tried it but it is not possible using hashtable.
till i send you code which i have tried.
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.Serialization;
using System.Xml.Serialization;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using System.Collections;
namespace HAshxml
{
[Serializable]
public class test
{
public int height;
public int length;
public test()
{
Console.WriteLine("Inside test parameter less constructor");
}
public test(int x,int y)
{
height = x;
length = y;
Console.WriteLine("Inside test constructor");
}
public void GetObjectData(SerializationInfo info,StreamingContext context)
{
Console.WriteLine("Inside Get object data");
}
}
public class Program
{
static void Main(string[] args)
{
test t = new test(10,20);
Hashtable ht = new Hashtable();
ht.Add("h", t);
Stream str = File.OpenWrite("D:\\abc.xml");
//BinaryFormatter formatter = new BinaryFormatter();
XmlSerializer ser = new XmlSerializer(typeof(test));
ser.Serialize(str, ht);
str.Close();
//formatter.Serialize(str, ht);
//str.Close();
//XmlTextWriter xl=new XmlTextWriter (
Console.ReadLine();
}
}
}
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