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What is the question?
Nana
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Hi,
I was doing some experiments with C# 3.5 and I got the following code which is very tough to digest for me. Could anyone help me to understand this ?
class MySimpleClass
{
private string _Property1 = string.Empty;
private string _Property2 = string.Empty;
public string Property1
{
get { return _Property1; }
set { _Property1 = value; }
}
public string Property2
{
get { return _Property2; }
set { _Property2 = value; }
}
}Following is the code where above class instance are kept in a List<>
List<MySimpleClass> objList = new List<MySimpleClass>{
new MySimpleClass{Property1="Hello",Property2="Hello1"}
}; How such type of invoking is possible ? I checked with the overloaded constructors for List class. But I couldn't find any matching methods there. I tried removing the instance creating of MySimpleclass. Then it shows error no overload method matches the parameter. From this I guess when we specify in the above format, automatically it is calling the Add() method specified in the List. How this happening, since no overloaded constructor takes MySimpleclass as parameter ?
Any ideas ?
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Maybe this blog will help. (at the object initializer part)
Click Here^
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Thanks for the link. That explains the syntax well. But still I am not getting how the call is going to Add() method ? Let me try with creating a custom collection and adding items. Thanks again
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Yes I found it. If any class which implements IList, and initialize like the above sample, it will call Add() method by default. 
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hi,
i am working on 2.0 winforms.
any plz tell me how to show an icon or image in ListView ColumnHeader.
thanks
Ramana
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Check this[^] out.
Take care,
Tom
-----------------------------------------------
Check out my blog at http://tjoe.wordpress.com
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I have created a MDI form and is has menus like file edit etc. On file menu I have login sub menu. I initially disable all the menus except file. With click on login sub menu login form open and user can put user name and passowrd. The question is if that password is correct I need to enable the menus. How is it possible ? please help me.
keyto
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This[^] article might help you. It does something very similar, so should serve as a good start.
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hi
how can i zip and unzip file in C# code ?
thank's
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depend onthe zipping/unzipping tool.
use System.Diagnostics.Process class,
through Process class execute the zipping executable with command line parameters.
convert zipped/unzipped files to the stream & write into the hard disk?
go it?
Ramana
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Hello,
You could use "SharpZibLib", which is a part of the free "SharpDevelop" project!
Can be downloaded (with examples) here![^]
All the best,
Martin
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Hi.....
By using GZipStream class you can compress and decompress the file.....
GZipStream Example Link[^]
Regards,
Sandeep Kumar.V
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hi,
I have fetched two database tables "MTQABenchMarks" and "Users" in the datagridview. This is a windows application. Now I have to update the "MTQABenchMark" database after making changes to the datatable present in the application. When I run the code it is throwing an exception "Dynamic SQL generation is not supported against multiple base tables." How to solve this. the code is
public Form1()
{
InitializeComponent();
}
static SqlConnection Con = new SqlConnection("Data Source= 192.168.100.234; Initial Catalog=gishyd; User ID=sa; password=gis*2005");
SqlDataAdapter Da = new SqlDataAdapter("SELECT dbo.Users.UserID, dbo.MTQABenchMark.Id as EmpID, dbo.Users.FirstName + ' ' + dbo.Users.LastName AS Name, dbo.MTQABenchMark.NoofMinPerDay,dbo.MTQABenchMark.PerMonth FROM dbo.Users INNER JOIN dbo.MTQABenchMark ON dbo.Users.UserID = dbo.MTQABenchMark.EID ", Con);
DataSet Ds = new DataSet();
private void Form1_Load(object sender, EventArgs e)
{
Da.Fill(Ds, "MTQABenchMark");
dataGridView1.DataSource = Ds.Tables["MTQABenchMark"];
}
private void button2_Click(object sender, EventArgs e)
{
SqlCommandBuilder CmdBld = new SqlCommandBuilder(Da);
Da.InsertCommand = CmdBld.GetInsertCommand();
Da.Update(Ds, "MTQABenchMark");
MessageBox.Show(" Database is Updated");
}
}
}
Please Help.
Nitin Raj Bidkikar
Nitin Raj Bidkikar
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You have 2 options.
1. Don't use INNER JOIN in your query. Get both tables separately and make relation between them at .NET level. Here you can select like a INNER JOIN only related records in both tables.
2. Don't generate and get INSERT or UPDATE command from Command Builder. Build manually INSERT or UPDATE commands for the ADAPTER.
For more information on these approaches GOOGLE.
Regards
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Hi
I am trying to write a windows services(first time).
I want it to write the name of each file opened in a notepad document.
I have written some code for it and I do have a service now which makes entry in the event log whenever it is started or stopped.
From where can I get a code understand what should be done next?
I dont want exact code; just a help to understand services
Chaos, panic and disorder - my work here is done.
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hello every one ,
i create user in sqlserver and when i create form in c# contain the username and password . i can't connect the user to data base .
how i can mack this .the spicifec preoplem in connection and compare user name and password
alhemyary
-- modified at 3:54 Monday 26th November, 2007
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Could you be a bit more specific? Which area is causing you the problem? The connection string? The stored procedure?
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Well, you need to fix your code. Do you mean you have a login with SQL Server that goes in your connection string, or a table with usernames and passwords which the user needs to use to use your application ?
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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How do I populate my dropdownlist with data from SQL?
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It has properties to tell it which column to use for the value and which to display. Set those and set the datasource to be your data from the DB. Call DataBind if this is ASP.NET
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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WebControl can use ListItem for DropDownList add a Item with Text and value.
WinForm how to do for Combobox?
Thanks.
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Set the data source as your datatable.
And then
Combo1.DisplayMember="Name";
Combo1.ValueMember="Id";
Regards
Pankaj Joshi
If you want to shape your dreams into reality, please wake-up...
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Hi guys,
I wonder whether this is the correct place for this post.
However, I'm looking for a C# 2.0 grammar or C# 2.0 language specification which I can use to write the specification for a parser which I am hoping to generate using ANTLR.
The ANTLR grammar for C# 2.0 is still not complete as I know so far. Therefore, if any of you guys have a grammar or language spec for this version of C# (eventhough incomplete), please fill me in.
Regards,
Ara 
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