Re: enduser cant go previous page using that back button in internet explorer - ASP.NET Discussion Boards

Merging two dataset in C#.NET?? [modified]

Karan_TN29-Jun-08 20:46

29-Jun-08 20:46

hai,
currently i m using asp.net with c# (.net 2005, 2.0 framework).
here i m trying to merge two dataset column wise and the column count,table name same.

for example, i use two dataset ds1 and ds2.

ds1 contains A,B,C,D column.
ds2 contains E,F,G,H,I,J column.

i need the resultant in gridview as A,B,C,D,E,F,G,H,I,J

Note : always the Rows will be equal in both ds1 and ds2 dataset.

how to achieve it? - KARAN

modified on Monday, June 30, 2008 2:59 AM

Re: Merging two dataset in C#.NET??

N a v a n e e t h29-Jun-08 20:49

N a v a n e e t h

29-Jun-08 20:49

It's always good to look documentation before you post something. See here[^]

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

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Re: Merging two dataset in C#.NET??

Christian Graus29-Jun-08 23:05

Christian Graus

29-Jun-08 23:05

Seems this fell on deaf ears, he just repeated the question.

Christian Graus

Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

enduser cant go previous page using that back button in internet explorer

Member 387988129-Jun-08 20:37

Member 3879881

29-Jun-08 20:37

Hi i want to disable the back button for ie...,

My enduser cant go previous page using that back button...,

How to do that...,

Thanks & Regards,
NeW OnE,
please don't forget to vote on the post

Re: enduser cant go previous page using that back button in internet explorer

Christian Graus29-Jun-08 20:39

Christian Graus

29-Jun-08 20:39

You can't. People who ask this, are usually asking because their permissions system is broken. If you build a persmission system properly, you will store a key in the session to tell you the user is logged in. If they log out, this is cleared, and every secure page will redirect to the login page if you browse to it and the session object is not set to tell you that a user is logged in.

Christian Graus

Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

Re: enduser cant go previous page using that back button in internet explorer

Member 387988129-Jun-08 21:35

Member 3879881

29-Jun-08 21:35

Hi i am using session on my forms,
Using user only i am doing all those things..,
So i cant abondom session...,

So i looked in js...,
They given this script,
Its working cool,

Becoz of this my session will get any probs?????,

Still now i didnt face any session probs of this script...,
But i like to confirm it,
Plz tell me can i use this script to avoid go back operation in my browser...,
This script i called in all the page body onload event:

function disable()
{
window.history.forward(1);
}

Thanks & Regards,
NeW OnE,
please don't forget to vote on the post

Re: enduser cant go previous page using that back button in internet explorer

eyeseetee29-Jun-08 21:48

eyeseetee

29-Jun-08 21:48

The only thing that might affect you is people can turn javascript off in their browser

We are not a Code Charity

Re: enduser cant go previous page using that back button in internet explorer

Christian Graus29-Jun-08 22:29

Christian Graus

29-Jun-08 22:29

New one wrote:
This script i called in all the page body onload event:

function disable()
{
window.history.forward(1);
}

This might work. Sometimes. Anyone who wants to defeat it, can. Trivially. So, write good code in the first place, and you won't need this.

New one wrote:
Hi i am using session on my forms,
Using user only i am doing all those things..,
So i cant abondom session...,

This makes no sense at all. If a session object marks that a user is logged in, of course you can abandon it. The session is unique per user, that's why you use it in the first place.

Christian Graus

Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

Re: enduser cant go previous page using that back button in internet explorer

tina->newcoder29-Jun-08 22:26

tina->newcoder

29-Jun-08 22:26

i don't know how to disable 'back' button,
but,
I have a idea ....
suppose, u have 10pages as 1.aspx,2,3,....9.aspx
now the user moves from page 3.aspx to 4.aspx
now, when the user arrives at 3.aspx, use Session["pagenumber"]="3";
when the user navigates to page 4.aspx, change it as Session["pagenumber"]="4";
at the entry of each page (in the page load function) check this entry !
Smile | :)

retrieve the cell value from the gridview but it returns null

kimo code29-Jun-08 20:27

kimo code

29-Jun-08 20:27

hi all,
I just want to retrieve the cell value from the gridview using the following
code,but it returns nothing null
plz help me

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int index = e.RowIndex;
//here to delete in data base
//the problem in the next code this string (spareid)carry null
string spareid = GridView1.Rows[index].Cells[0].ToString();
new DataAccess.Service().SparePart_Delete(spareid);
//here to delete in dataset to reflect in gridview
DataSet ds = (DataSet)Session["dataset"];
ds.Tables[0].Rows[index].Delete();
GridView1.DataSource = ds;
GridView1.DataBind();
//here notification for delete
lblmsg.Text = "delete ok ";
lblmsg.Visible = true;
}

plz help me i dont know where is the error
thanks in advice

Kareem Elhosseny

Re: retrieve the cell value from the gridview but it returns null

Christian Graus29-Jun-08 20:36

Christian Graus

29-Jun-08 20:36

Is your page load interacting with your grid at all ? If you look at this code in the debugger, do any of the cells have data for that row ? For any row ?

Tell me it's not really called gridview1 ???

Christian Graus

Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

Re: retrieve the cell value from the gridview but it returns null

kimo code29-Jun-08 20:51

kimo code

29-Jun-08 20:51

my friend Christian Rose | [Rose]

;
I have a user controle which carry this gridview and use it in the aspx page
is this case cause any problem
i dont know where is the error and why it carry null Cry | :((

Kareem Elhosseny

Re: retrieve the cell value from the gridview but it returns null

Christian Graus29-Jun-08 20:59

Christian Graus

29-Jun-08 20:59

No, that won't cause it, perhaps you could answer my questions ?

Christian Graus

Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

Re: retrieve the cell value from the gridview but it returns null

kimo code29-Jun-08 21:51

kimo code

29-Jun-08 21:51

Dear friend;
my question why the cell carry null value ?
i make all solution but it also carry null

Kareem Elhosseny

Re: retrieve the cell value from the gridview but it returns null

Christian Graus29-Jun-08 22:30

Christian Graus

29-Jun-08 22:30

I can't answer you, because I asked you questions to try to work out the problem and you did not answer them.

Christian Graus

Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

Re: retrieve the cell value from the gridview but it returns null

N a v a n e e t h29-Jun-08 20:56

N a v a n e e t h

29-Jun-08 20:56

Christian Graus wrote:
Tell me it's not really called gridview1 ???

. Last week I was invited to one company for checking their code and giving some advice for their project. I can see a gridview named as gridView256 ! The page which they wrote contained 256 gridviews and all named like gridview1 .. 256. What a disaster !

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

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Re: retrieve the cell value from the gridview but it returns null

brettokumar29-Jun-08 21:07

brettokumar

29-Jun-08 21:07

im not using any server controls

with regards,
bretto

Re: retrieve the cell value from the gridview but it returns null

Masood Kochi,SSF29-Jun-08 20:57

Masood Kochi,SSF

29-Jun-08 20:57

I also face that type problem. at that time i change the cell index even the original cell index is =0, Try this ..

Re: retrieve the cell value from the gridview but it returns null

N a v a n e e t h29-Jun-08 21:02

N a v a n e e t h

29-Jun-08 21:02

Are you binding the grid in the page load ? make sure you are doing it inside "!IsPostBack" blocks.

elhosseny wrote:
string spareid = GridView1.Rows[index].Cells[0].ToString();

It's not safe to do the above. "Rows[index]" returns a row instance which may be NULL or the cell may be NULL. Check it is NULL, if not proceed with delete.

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

How to use google | Ask smart questions

Re: retrieve the cell value from the gridview but it returns null

kimo code29-Jun-08 21:41

kimo code

29-Jun-08 21:41

ok i'll change the gridview name is it the solve for my problem
where the solution ???????????????????????????????????????????????????????????????????????????????????????

Kareem Elhosseny

Re: retrieve the cell value from the gridview but it returns null

Bharani_Ram29-Jun-08 21:51

Bharani_Ram

29-Jun-08 21:51