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thank u very much
and wht if i want to display serial no as well and i can delete the row.
i want delete button on each row so whenever i press it that row shud be deleted well i can add delete button but i dont know the logic
any help will be greatly appreciated.
thank
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Salams
ur code is giving problem when im using in page tht is using a master page
sometimes it gives this error
ystem.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 28:
Line 29:
Line 30: hf.Value = string.Empty;
Line 31:
Line 32:
Source File: f:\erpSite\erp2\test.aspx.cs Line: 30
and onother time it gives this error
System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 47: dr[0] = counter + 1;
Line 48: dt.Rows.Add(dr);
Line 49: gv.DataSource = dt;
Line 50: gv.DataBind();
Line 51: Session["dt"] = dt;
Source File: f:\erpSite\erp2\test.aspx.cs Line: 49
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well, its not my code instead it is your logic that giving you the error. It seems that you are accessing the hidden field (hf) and gridview (gv) in test.aspx.cs but hf and gv are not declared in test.aspx. So check if you have declared them in this page. You should check you test.aspx page and then run in debug mode and see the cause of error.
To show the sequence number on the page comment the code in rowdatabound that has row.cells[row.cells.count-1].visible = false. For deleting a row set allowdelete (you can check actual syntax in visual studio) to true and then in RowCommand delete that row from the gridview and from the datatable in session. (you can find the row based on the sequence number and delete it from the session).
-----
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i have checked hf and gv already exist in the page it gives the same error i told u wht shud i do
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the second problem is as i told u i have a textbox named item there is a button besides tht textbox on each row when i click tht button a pop up shud be open well i opened the pop through the javascript now i want to pass the client id of tht textbox i mean item to tht javascript function which is calling the pop.so plz help me out this problem is driving me crazy
any help wud greatly be appreciated
i will wait for ur reply
u have solved my prob until now this is the last problem plz do me favour
thank u very much
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please help me out
well i done all these things by my self now the only problem remains is when i reload or refresh my page automatically row is inserted i dont want this please reply
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hi , i have an idea i wish to do it
i have a listbox it's disply member is StudentName and value member is StudentCode
i want to write the student name in textbox and find this name in listbox by like
examble i search for name Mohammed and i write in textbox Mo how can i select the first item match this
thnx 4 help
MD_NADA
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Loop though the elements in the list.
Call the String.StartsWith method on the display member for each element with the value entered in the listbox. If this method returns True for a particular item, the item begins with the text entered in the textbox.
Paul Marfleet
"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush
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Hello everyone,
I am trying to debug a Class Library. My question is:
Once the Class Library project is built and attached to a running process; using Module Windows, should I be able to see that MyProject.DLL file has been loaded?
Any information on attaching and debuging a Class Library project to a running process will greatly be appriciated.
Thank you very much and have a great day.
Khoramdin
-- modified at 12:18 Sunday 18th November, 2007
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You would normally have your class library project in the same solution as the other projects you are working on. The debgging is seamless and flows through from one project to another.
Upcoming FREE developer events:
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My website
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Hello Colin,
Thanx for the reply. You are absolutly correct if the Class Library was created for an exsisting project. I am not able to do so since the Class Library is for creating a Browser Helper Object (BHO). That is why I am using Attach Process to attach it to IE Browser.
I am trying to undrestand the way Class Library works in Visual Studio, so I can solve the issue I am currently facing.
Thank you for taking the time and respond. Any information in regard with this is greatdly appriciated, Colin.
Have a great weekend.
Khoramdin
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hi all,
i have problem that i m unable to use ExecuteNonQuery() and "EXISTS" of sql
i want to check in my table that the required row is exists or not
i used ExecuteNonQuery() but it always returns -1
codes
dataCommand.CommandText = "select * from tabel1 where id = '" + label1.Text + "'";
int check = dataCommand.ExecuteNonQuery();
if (check > 0)
{
MessageBox.Show("this is already exists");
return;
}
for temporary i m using SQLDataReader's HasRows bool
can someone have another best solution?
Becoming Programmer...
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SqlCommand cmd = new SqlCommand();
cmd.CommandText = "SELECT COUNT(*) FROM table1 WHERE id = @id";
cmd.Parameters.AddWithValue("@id", label1.Text);
cmd.Connection = myConnection;
int count = cmd.ExecuteScalar();
if (count > 0)
{
}
Please also note that the above uses a parameterised query thus reducing the posibility of a SQL Injection attack. You may also like to read SQL Injection Attacks and Tips on How To Prevent Them[^]
Upcoming FREE developer events:
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yeah it will work but why microsoft made "EXISTS" function in sql ...??
Becoming Programmer...
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xmen_xwk wrote: yeah it will work but why microsoft made "EXISTS" function in sql ...??
So you can do this:
IF EXISTS (SELECT * FROM MyTable WHERE SomeColumn = @SomeValue)
BEGIN
-- Do stuff here based on whether any rows exist.
END
Upcoming FREE developer events:
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* Developer Day Scotland
My website
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oh yeah, i tried this and in body i tried to return 0 or 1
but it gave errors, but now i have a good way that you told
thanks CAM
Becoming Programmer...
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Hi All/Luc,
Is there a Big Integer package in C#? I don't want to jump through API hoops to do big math (nothing like the suffering of attaching an image list to a tree view ). Next, is there a Bas64 Encoder/Decoder available in C#?
I seem to be pulling lower quality suggestions from Google. So rather than jump into it, I'll wait for the advice.
Thanks,
Jeff
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Hi Jeff/All,
1.
there are several big integer packages publicly available. Maybe the most acclaimed one is
GMP (GNU Multi-Precision). IIRC its written in C++, I haven't seen a .NET wrapper for it though.
And there are some articles on CodeProject[^] covering this (with different capabilities and
qualities). Much depends on what it is you want to achieve.
2.
Not sure what you mean, maybe Convert.FromBase64String() and its sibblings will help you.
Luc Pattyn [Forum Guidelines] [My Articles]
this months tips:
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use PRE tags to preserve formatting when showing multi-line code snippets
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Luc Pattyn wrote: And there are some articles on CodeProject[^]
I wrote the first article.... I'll get a port together to C#. Do you want to coauthor? I'll have problems with the Managed/Unmanaged thunk. (This is my third day on C#.)
Luc Pattyn wrote: Maybe the most acclaimed one is GMP (GNU Multi-Precision).
I'm a Crypto++ man myself. Years ago (circa 1998), I was never able to get a clean port of GMP to Windows.
Luc Pattyn wrote: Not sure what you mean, maybe Convert.FromBase64String()
Perhaps - I'll have to look at it.
Luc Pattyn wrote: Much depends on what it is you want to achieve.
This is going to be an article on Crypo++ interoperability with other Crypto Libraries and standards. The first article in this series is (somewhat out of order) is ASN.1 Object Identifier Encoding and Decoding[^]. It became such a large topic, it was spun off. In reality, it was supposed to be part of a Cryptographic Certificate Parser (*.CER, *.P7B, etc).
The TreeView is used for displaying results of the parser - the icons are a UI element aiding in vidualization of the message structure.
Jeff
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Jeffrey Walton wrote: I'll get a port together to C#. Do you want to coauthor? I'll have problems with the Mnanaged/Unmanaged thunk
Hi Jeff, that's something we can look into. I'll send you an e-mail...
Luc Pattyn [Forum Guidelines] [My Articles]
this months tips:
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use PRE tags to preserve formatting when showing multi-line code snippets
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Hi,when i run my project in C# it dosen't define ReportViewer1.BorderStyle="solid" code that i have wrote in my ReportForm.Cs source file.How can i write code like this with out using ReportViewer Toolbar before running the project to define my Report Page setup as like as Border Style seting ,page setup setting for example my papaer size to be A4 and margin setting and other properties of my Report without defining these properties at running time or design time only with writing code in source file in my report from ?
thanks
D.Riazi
-- modified at 8:40 Sunday 18th November, 2007
D.Riazi
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Hi,
I am trying to run the exe file that was generated by vs.net in another computer, but it posts an error message and I can not run it. How can I do this please. Thanks.
Hawari
hawari
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What is the error message?
My current favourite word is: PIE!
Good ol' pie, it's been a while.
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Hi,
This is the error message "The application failed to initialize property (0xc0000135)". Thanks
hawari
hawari
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That is the cryptic message Microsoft has designed to tell you you don't have
(the right version of) the .NET Framework. So decide which version you need,
look for the download site and install it.
Luc Pattyn [Forum Guidelines] [My Articles]
this months tips:
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use PRE tags to preserve formatting when showing multi-line code snippets
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