ASP.NET

Re: unknown error in c# web application

6-Feb-07 23:53

the response.redirect looks ok to me!! what is the error description?

Gautham

Sylvester george6-Feb-07 23:57

Sylvester george

6-Feb-07 23:57

Use Server.UrlEncode() method while attaching values.

ex :

Server.Transfer("../userModules/ManageMores.aspx?ASe=" + Server.UrlEncode(Asp).....

Regards,
Sylvester G
Senior Software Engineer
Xoriant Solutions
sylvester_g_m@yahoo.com

How to update the xml file using datagrid in asp.net

mohit Tyagi6-Feb-07 23:47

mohit Tyagi

6-Feb-07 23:47

Hi all
i want to update the xml file using datagrid
i am using dreamweaver 8.0 and coding in asp.net
i have the problem that i am notable to saving the updated value at the file

So
plz reply Quickly

Re: How to update the xml file using datagrid in asp.net

blue_arc7-Feb-07 0:31

blue_arc

7-Feb-07 0:31

import xml in to to data set,

do the changes

then

use...
dataset.writeXml

Ravi Kant Srivastava
(System Analyst)
HandsOn Technology & Engineering
Gurgaon
(India)
e-mail:ravikant@hte.co.in

Read data from gridview

mail5723526-Feb-07 23:35

6-Feb-07 23:35

Hi,

I have a gridview containing several rows of multi-column data. I've bound my grid from an ArrayList specifying bound fields on my gridview columns like this:

<asp:BoundField HeaderText="Price" DataField="SalesPrice" />

I can then read in cell/column data by indexing into the row and indexing to the column I need like this:

String str = (gvItems.Rows[i].Cells[0]).Text;

Knowing exactly which column it is, is error-prone so what I'd like to do is access my data knowing the datafield name, "SalesPrice". Can anyone suggest a good way of doing this?

Do I need to have a template?

dinus286-Feb-07 23:49

dinus28

6-Feb-07 23:49

hi

it is always better to use index than using the name. bcoz if the name is changed u have to modify everywhere wherver u use it. for huge projects it is a very tedious job. my suggestion would be that u better use index.

mail5723527-Feb-07 0:37

7-Feb-07 0:37

Thanks for your reply.

It is more likely for the column order to be changed rather than the name of the data field because the latter is what the gridview control is bound on.

The problem is that if the order of the columns changed, and the types of data were different as they are in my grid, the code would break. Whilst each column is a string value, some of those strings are actually numbers and I use a Parse method to parse them. If these methods tried to parse a string which wasn't actually a number, an exception would be raised.

Also, I pass the values to a method. If I use indexing, I have to arrange my parameters according to what position I read them in as, like this:

obj = new MyObject
(
   (String)(gvItems.Rows[i].Cells[0]).Text,        // Product code
   (String)(gvItems.Rows[i].Cells[1]).Text,        // Description
   (String)(gvItems.Rows[i].Cells[6]).Text,        // Part Number
   Decimal.Parse((gvItems.Rows[i].Cells[2]).Text), // Sales Price
   Decimal.Parse((gvItems.Rows[i].Cells[3]).Text), // Quantity
   Decimal.Parse((gvItems.Rows[i].Cells[5]).Text), // VAT Rate
   Decimal.Parse((gvItems.Rows[i].Cells[4]).Text)  // Discount
);

It's far better to use the name if at all possible.

dinus287-Feb-07 0:50

dinus28

7-Feb-07 0:50

hi
the code varshavmane has sent would be more optimized one. did u try that one.

mail5723527-Feb-07 1:37

7-Feb-07 1:37

No, I don't want to refer to the index of the columns at all.

I need to retrieve the data based on the datafield name defined in the .aspx form.

gauthee6-Feb-07 23:50

6-Feb-07 23:50

how about: gvItems.Rows[i]["column name"].Text

Gautham

dinus286-Feb-07 23:54

dinus28

6-Feb-07 23:54

what would happen if column name is changed???

gauthee7-Feb-07 0:01

7-Feb-07 0:01

if the coumn name changes the code changes......

Gautham

gauthee7-Feb-07 0:03

7-Feb-07 0:03

change the code when the column name changes!!!!!

Gautham

mail5723527-Feb-07 0:39

7-Feb-07 0:39

gauthee wrote:
gvItems.Rows[i]["column name"].Text

This doesn't compile unfortunately Frown | :(

varshavmane6-Feb-07 23:57

varshavmane

6-Feb-07 23:57

If u just want to read the Gridview values then try this :

For intGridRowcnt = 1 To GridViewQuery.Rows.Count
If intGridRowcnt = GridViewQuery.Rows.Count Then
strWhereClause = strWhereClause & GridViewQuery.Rows(intGridRowcnt - 1).Cells(3).Text & " "
strWhereClause = strWhereClause & GridViewQuery.Rows(intGridRowcnt - 1).Cells(4).Text & " "
strWhereClause = strWhereClause & GridViewQuery.Rows(intGridRowcnt - 1).Cells(5).Text & " "
Else
strWhereClause = strWhereClause & GridViewQuery.Rows(intGridRowcnt - 1).Cells(3).Text & " "
strWhereClause = strWhereClause & GridViewQuery.Rows(intGridRowcnt - 1).Cells(4).Text & " "
strWhereClause = strWhereClause & GridViewQuery.Rows(intGridRowcnt - 1).Cells(5).Text & " "
strWhereClause = strWhereClause & GridViewQuery.Rows(intGridRowcnt - 1).Cells(6).Text & " "
End If
Next

datagrid in a seperate cs file

Murthy Puvvada7-Feb-07 2:11

Murthy Puvvada

7-Feb-07 2:11

The best thing i would recommend is as follows:

TextBox shorttitle = Bgt_Main.FooterRow.FindControl("txtshorttitle") as TextBox;

GridViewRow row= Bgt_Main.SelectedRow/
GridViewRow row = Bgt_Main.Rows[Bgt_Main.SelectedIndex];

TextBox shortt = row.FindControl("short") as TextBox;

Label mainid = row.FindControl("lblrow") as Label;

and then use:

shorttitle.Text/ shorrtt.Text/ mainid.Text

so the general syntax would be:

<controltype> = <gridview>..... as <controltype> here "txtshorttitle","short","lblrow" are the ID's of the textbox/label's in the itemtemplate of the girdview/DetailsView. Even if the column name changes like in Bind(..) or Eval(..) you dont have to change the code. I hope this makes everything clear Murthy here

gauthee6-Feb-07 23:33

6-Feb-07 23:33

Hi,

The requirement as follows:
A custom datagrid should be created, and mostly this should be in seperate cs file-so here all the properties of the datagrid should be maintained i guess!!!
Now at the front end[UI level] is hould use the custom datagrid whenevr required.

Any reference links,,,

Gautham

Paddy Boyd6-Feb-07 23:36

Paddy Boyd

6-Feb-07 23:36

You could either create a user control (ascx file) or a custom control depending on your need. Plenty of links for both of these things on google...

gauthee6-Feb-07 23:57

6-Feb-07 23:57

User Control, the normal way to do things! however this is not the requirement, a datagrid should be there with all features like paging, sorting, etc etc. Now whenever required i should use this grid and could change props if wanted!! The remaining fetaures like adding template colmn, etc, etc.. should work too.

Tried google but that mission failed!!!

Gautham

blue_arc7-Feb-07 0:34

blue_arc

7-Feb-07 0:34

i think either u r tryiing to re-inventing the wheel.

or not using the gridview properties properly...

ok do one thing pendown every thing, and start from first..

actually it is just like a small project...

Ravi Kant Srivastava
(System Analyst)
HandsOn Technology & Engineering
Gurgaon
(India)
e-mail:ravikant@hte.co.in

gauthee7-Feb-07 0:43