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That's obvious: "'object' does not contain a definition for 'Show'". The type object does not provide a method called Show. Your variable SearchForm must be of type Form, which provides this method.
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Thanks. You are right, at the base class the 'object' don't have "Show" method. The "SearchFrom" only instance in the inheritted form but not in the class.
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Now I want to merge column header of datagrid with C# but I don't know how to do this. Please help me. Thanks.
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Hi,
I am new in C#,i want to scan pixels of spline curve from a bitmap image ,and want to store them in linked list.How Please Help me!!!!!!!!!!!!!!!!!.i will be very thankfull to you.
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So you want to work out which pixels are on the curve ? The curve is on the image and you're trying to find it, or you're defining the curve yourself ?
The List class represents a linked list. You don't need random access then ? I'd have thought an array would be best, seeing as you're not likely to want to insert a pixel in the middle after you work it all out. ArrayList is an array.
Christian Graus - Microsoft MVP - C++
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I need a month year textbox or a monthyear selection control for an application in c# that displays only months and years and no date similiar to credit card expiry date style selection .Can anyone help from where can i get such a control or any alternative solution
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Please, please, please don't post the same question to every forum on this site.
I answered this question on another forum earlier today.
Christian Graus - Microsoft MVP - C++
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I am working on a desktop application (Windows based). It has a MDI form and a child form. At a time there will be maximum two child forms. Application has Wizard kind of structure, so has multiple steps.
Some of the times when user working on the application, it
stops responding to any click event though it shows the focus. User can click only on title bar and that works, all other control including menu bar, toolbar does not respond to click. In addition, I noticed there is one extra window you can see when you press Alt+TAB. The name of the window is WindowsFormsParkingWindow. Whenever this window is there, this problem arises.
Can anyone assist how to get rid of this problem
I able to figureout that it happenes when a control which does not have parent and get placed on WindowsFormsParkingWindow and have focus.
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Controls by default are associated with WindowsFormsParkingWindow before they are part of control collection.
This problem occur when the control which is there in WindowsFormsParkingWindow have focus.
http://dotnet.org.za/johannds/archive/2004/03/08/650.aspx
- ashish
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I've write a button base class. In the click even't i put code below:
this.Enabled = false;
this.Clicked(); //is a public virtual method in the class.
this.Enabled = true;
So next time when i when i use the button control i just need to put all my code in the Clicked() method in the custom button control. But the proplem is how do i put the in the Clicked() method ? In VFP i just need to override the Clicked() method with mu on code. But in C# it seen like quit confusing for me. Please advice. Thanks.
Below is the complete class code.
public class stdTextBox:System.Windows.Forms.Button<br />
{<br />
protected override void OnClick(EventArgs e)<br />
{<br />
this.Enabled = false;<br />
this.clicked();<br />
this.Enabled = true;<br />
}<br />
private void clicked()<br />
{<br />
}<br />
}<br />
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What is VFP ?
Clicked is not a method, it's an event. You need to add an OnClicked handler, either by overriding the method, or writing a handler and adding it to the Click method.
Here[^] is some info on the topic.
Christian Graus - Microsoft MVP - C++
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VFP = Visual FoxPro. Thanks you very much.
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Hy!
My DragDrop event doesn't work, but the DragEnter and DragLeave events work OK.
I've added EventHandlers to the events. I tried debuging, and i saw that the DragDrop event wasn't called.
What can causes it?
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Hi all,
if anyone can help me it would be greatly appreciated...
I created an Excel model in my C# code and now need to send it to the client (on a button click) for download (with the standard Open, Save, Cancel dialog box)
I could save it to the server first as an .xls file and then send it as a file to the client but I would prefer not to do this since the actual file is not even needed on the server side
schoudhr@hotmail.com
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I can find a million tutorials on converting XML to RTF but can you point me to a link that will show me how to convert RTF to XML in C#.Net?????
Mike Mac
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How would that work ? Where does the schema come from ? How do you know what goes in each node ?
Christian Graus - Microsoft MVP - C++
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It may use its internal schema. All we want is the conversion program/script should map rtf tags to corresponding xml ones. Request someone guide us through this.
Thanks in advance,
Sandy (sandeepsahane@gmail.com)
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i have a 300x300 png with some area transparent and i need another one 500x600 also this with some transparent area.
i need to draw in a 200x200 picture box a rect(200x200) of the first one on the picturebox and over this a rect of the second one (200x200).
It could leave transparent areas if found.
How could i do?
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A picture box only shows one image, I suspect you need to merge them first. I'm not sure if you can do this with transparency, but I'd hope so.
Christian Graus - Microsoft MVP - C++
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I would like to write a console application in C# that allows for me to login to a website that requires a username and password. Additionally, I would like for the program to automatically store and manage my cookie(s) for the given website as well. The site that I have attempted to test this this on is listed below.
http://www.homeseekers.com/
user:test
pass:test
I have been following the examples I found on this site http://west-wind.com/presentations/dotnetWebRequest/dotnetWebRequest.htm with no luck. Could you tell me where exactly I am going astray? Or perhaps point me to some resource(s) that might clear up the confusion?
-TIA Dirk
ex.
try
{
string lcUrl = "http://www.homeseekers.com/Scripts/my_login.asp";
HttpWebRequest loHttp = (HttpWebRequest) WebRequest.Create(lcUrl);
loHttp.CookieContainer = new CookieContainer();
//pulled this information from firefox live http headers program
string lcPostData = "myUserID=test&myPassword=test&Login=Log+in&blnFromLogin=True&PreviousPage=%2Fdefault.asp%3F_ver%3D5%26_lid%3D0&remember=1";
loHttp.Method="POST";
byte [] lbPostBuffer = System.Text.Encoding.GetEncoding(1252).GetBytes(lcPostData);
loHttp.ContentLength = lbPostBuffer.Length;
Stream loPostData = loHttp.GetRequestStream();
loPostData.Write(lbPostBuffer,0,lbPostBuffer.Length);
loPostData.Close();
HttpWebResponse loWebResponse = (HttpWebResponse) loHttp.GetResponse();
Encoding enc = System.Text.Encoding.GetEncoding(1252);
StreamReader loResponseStream = new StreamReader(loWebResponse.GetResponseStream(),enc);
string lcHtml = loResponseStream.ReadToEnd();
for(int i = 0; i < loHttp.Headers.Count - 1; i++)
{
Console.WriteLine(loHttp.Headers[i]);
}
loWebResponse.Close();
loResponseStream.Close();
}
catch(Exception ex)
{
Console.WriteLine(ex.Message);
}
~Yes, I am some kind of idiot.~
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Hi guys,
I've got a C# smart client application that allows the user to change, create, or delete data that's stored in an MSDE SQL database. I've rolled my own messaging queue so that the when a client updates lots of data at a time (e.g. deletes 500 rows of data, create 2 rows, update 100 rows), I send a batch message to my server application containing 602 sub-messages describing what happened (in other words, one big message containing all the actual messages describing what happened). This way I only have to go over the network from client to server only 1 time.
All that works great.
My problem is that now that the "delete 500, create 2, update 100" batch message is on the server, I have to call a stored procedure in the database for each message: call RemoveRow stored proc 500 times, call CreateRow stored proc 2 times, call UpdateRow stored proc 100 times.
Using a profiler to look at my code, it is apparent that this execution of several hundred stored proc calls is a bottleneck. Is there any way to allow the MSDE database to execute a batch of commands all at once? Or better yet, is there a better way of doing this?
Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Conversation With a Muslim
Judah Himango
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Hi am writing a chat server and I was stress testing my server and found some errors.
Say I have an arraylist.
ArrayList sockets = new ArrayList(listOfSockets);
Now I call Socket.Select to take out the sockets that don't have data on them.
Socket.Select(sockets, null, null, 100000000);
This is where the error happens, if I pass in a ArrayList that has 65 sockets in it.
It causes a IndexOutOfRangeException to happen. I have tried using other ways of doing it and it causes different errors but it always happens when it reaches 65 sockets.
I am dumbfounded please help.
------------------
I'm naked under my clothes...
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That's badass how your name scrolls!!! Can you teach me your hax0rz skillzE?@!??
/\ |_ E X E GG
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Hello everyone,
I'm working on imaging software in C#, but there's problem with memory.
For example, when I load thumbnail images to album or a sigle image in full size, task manager will show that memory usage of my app has grown from 20 MB to 170 MB or more! What's worse, when I close the MDI form album with thumbnails, usage doesn't go down till closing the whole app.
I thought that Garbage Collector should remove all resources, but it's quite inactive... When I force thumbnail image to dispose (calling Image.Dispose()), nothing change.
I have a suspicion that memory usage of my app growing gradually till some moment when system tells user there is not enough virtual memory.
I'm afraid that times of malloc() and free() are gone, but...
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