Re: Parameter not valid - ASP.NET Discussion Boards

How to bound object for editing Gridview

Kurian_Kurian14-Jul-07 3:56

14-Jul-07 3:56

Hi.I add command field[Edit,Delete] in the gridview for editing or deleting the selected row cell value.and i right click the gridview - choose datasource-select object-then i click update i select the following method but the next button is not enabling still disabled.what is wrong with this method or how can i call the object for editing or deleting the gridview.

public void EditUsefulHeading(string PKey,string HEADING)
{
using (SqlConnection conn = new SqlConnection(ConnectionString))
{
conn.Open();
using (SqlCommand cmd = new SqlCommand("UPDATE USEFULLINKSM SET HEADING=@HEADING WHERE PKEY=@PKEY", conn))
{
SqlParameter HEADINGS = new SqlParameter("@HEADING", HEADING);
SqlParameter PKEYS = new SqlParameter("@PKEY", PKey);
cmd.Parameters.Add(HEADINGS);
cmd.Parameters.Add(PKEYS);
cmd.CommandType = CommandType.Text;
cmd.ExecuteNonQuery();
}
}
}

Server.Mappath

Kurian_Kurian14-Jul-07 3:19

Kurian_Kurian

14-Jul-07 3:19

Hi. in my web application there is a option for showing the photos,when click photos button will load photos.aspx page and am keeping the images in the server folder name Photos.in my local machine while loading the page i will get all the images which i store in the Photos folder,but i host this page and open this page am not getting any images.the page load event as follows.what is wrong with this code.somebody can help me.

if (!IsPostBack)
{
DataSet ds = new DataSet();
DataTable dt = new DataTable("Photos");
dt.Columns.Add("Photos", Type.GetType("System.String"));
foreach (string Files in Directory.GetFiles(Server.MapPath("Photos"), "*.jpg"))
{

dt.Rows.Add(Files);
}
ds.Tables.Add(dt);
this.dgPhotos.DataSource = ds;
this.dgPhotos.DataBind();
}

Re: Server.Mappath

DarrollWalsh14-Jul-07 3:57

DarrollWalsh

14-Jul-07 3:57

Sounds like a permissions problem. Do you have view permissions to the root of the drive you are trying to view? Another option is to use classic asp style of debugging and output any errors, or even the path of the photos folder.

D^arroll

Re: Server.Mappath

Guffa14-Jul-07 5:59

Guffa

14-Jul-07 5:59

The Directory.GetFiles returns an array of physical file paths on the server. As long as the server is the same computer as the client computer, you will be able to see the images, as you see the images that are stored locally on your computer, as they happen to have the exact same file path as the images that are stored on the server, as they happen to be the exact same files. When you view the page on the hosted server, the images are only stored on the server, so when you try to view the images they are not there, as you no longer have a local copy of the images on your computer with the same file paths as on the server.

You have to make sure that you use the virtual path to each image, not the physical path, when you put them on the page.

---
single minded; short sighted; long gone;

Parameter not valid

Viral Upadhyay14-Jul-07 1:05

Viral Upadhyay

14-Jul-07 1:05

HI,
I am fecthing varbinary data from data base and converting it to Image data.

i got error of 'Parameter is not valid'

i use this code

<br />
System.Drawing.Image img;<br />
byte[] photobyte = (byte[])dtPhoto.Rows[0][0];<br />
using (MemoryStream stream = new MemoryStream((byte[])dtPhoto.Rows[0][0]))<br />
{<br />
    img = System.Drawing.Image.FromStream(stream); // here i gor error<br />
    img.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);<br />
}<br />

Thanks

Viral
YahooID : just_viral
My Site : www.theseoworld.info

Re: Parameter not valid

kubben14-Jul-07 1:14

kubben

14-Jul-07 1:14

Why are you using Response.OutputStream instead of the stream var you just created?

Ben

Re: Parameter not valid

Viral Upadhyay14-Jul-07 1:32

Viral Upadhyay

14-Jul-07 1:32

Hi ben i use Response.OutputStream for display image on Page.

thanks for reply...

Viral
YahooID : just_viral
My Site : www.theseoworld.info

Re: Parameter not valid

Guffa14-Jul-07 6:03

Guffa

14-Jul-07 6:03

Are you trying to change the file format of the image, or why are you loading and saving the image?

If you just want to send the image to the browser, don't use any Image object, just send the bytes.

---
single minded; short sighted; long gone;

Re: Parameter not valid

Viral Upadhyay14-Jul-07 9:04

Viral Upadhyay

14-Jul-07 9:04

Well i try it too but dont work can please tell me how to send the byte??

thanks for your reply..

Viral
YahooID : just_viral
My Site : www.theseoworld.info

Re: Parameter not valid

Guffa14-Jul-07 10:14

Guffa

14-Jul-07 10:14

Use the Response.BinaryWrite method.

---
single minded; short sighted; long gone;

Dynamic Hyperlink

.NET- India 13-Jul-07 23:48

.NET- India

13-Jul-07 23:48

Hello Everyone,

Can anybody create hypelink dynamically or run-time and providing differnt-different links

Example:-

I've four Names and they have four links respectively
and i want to display these within a table and also i'm creating the table dynamically

Thnx in advance

Re: Dynamic Hyperlink

Manas Bhardwaj14-Jul-07 4:44

Manas Bhardwaj

14-Jul-07 4:44

The Knowledge wrote:
Can anybody create hypelink dynamically or run-time and providing differnt-different links

Not sure about everyone (anybody) but yes, moust of them can .

The Knowledge wrote:
I've four Names and they have four links respectively
and i want to display these within a table and also i'm creating the table dynamically

provide with some more details, so that you can be helped.

Crystal Reports -- Unable to get report name in code behind in ASP.NET2.0 web form.

Jagadeesh Jupalli13-Jul-07 21:39

Jagadeesh Jupalli

13-Jul-07 21:39

Hello All,

I created my crystal report and saved it. Then
I created a new webpage and added Crystal report viewer and saved it.

In the code behind of the webpage when i tryed to add code i am unable to get the report name (automatically in the dropdown). If I write/typed the report name and tryed to run report it is showing an error message there.

"Compiler Error Message: CS0246: The type or namespace name 'CrystalReport1' could not be found (are you missing a using directive or an assembly reference?)"

Please let me know how to get the report name in the code behind automatically. D'Oh! | :doh:

Regards,
Jagadeesh

Re: Crystal Reports -- Unable to get report name in code behind in ASP.NET2.0 web form.

kubben14-Jul-07 1:13

kubben

14-Jul-07 1:13

Did you load the crystal server runtime on the web server? You need the crystal dlls for crystal reports to run.

Ben

Re: Crystal Reports -- Unable to get report name in code behind in ASP.NET2.0 web form.

Jagadeesh Jupalli14-Jul-07 2:30

Jagadeesh Jupalli

14-Jul-07 2:30

Ben,

I couldn't get what you are saying. This is my first Crystal report. I am working in VS2005, using ASP.NET & C# for this Crystal Reports.

When i binded a simple report using CrystalReportViewer control (with out using any dataset), It worked fine. (There is no code in the codebehind except the CrystalReportViewer bind property) It showed the values correctly.

When I tryed the same with the dataset in the code behind i am unable to get the reportname in the snippet.

CrystalReport1 crReportDocument = new CrystalReport1(); --> i'm not getting this report name here.

I am following the following steps to generate Crystal Reports using the
Datasets.

1) Right clicked on my solution and selected add, New Item.

2) Added a dataset and created a query in the dataset. and saved this
dataset.

3) Added a Crystal Report Viewer to my webform.

4) Right clicked on my solution and selected add new Item Again and then
added a crystal report

5) In the crystal report wizard Selected crystal reports wizard and then
selected my report format...

6) Under the data menu I selected project data, then ADO.NET datasets. My
dataset showed up with its fields and you can make your selection as well
as created my crystal report.

7) The code behind ******(in the webform where I added Crystal Report
Viewer)*****

I tryed to write code but unable to get my report name (automatically in
the dropdown).

Is my step 3 correct? I am unable to understand why my crystal report name
is not showing up in my code behind. Please let know your thoughts.

Many Thanks,
Jagadeesh.J

Datagrid Colunm Header

| Muhammad Waqas Butt |13-Jul-07 21:35

| Muhammad Waqas Butt |

13-Jul-07 21:35

How to change Datagrid Header Text through programming in C#.net.
and how to set colunm width and height. How to format date in datagrid column.

and I want to highlight row where cell fee value = 0;

|Muhamad Waqas Butt|
waqasb4all@yahoo.com
www.sktech.freewebspace.com

Re: Datagrid Colunm Header

Gamzun13-Jul-07 22:22

Gamzun

13-Jul-07 22:22

there no property name HeaderText :P

and about columns widht n height use cellspacind and cellpadding

Re: Datagrid Colunm Header

arslanjatt13-Jul-07 22:23

arslanjatt

13-Jul-07 22:23

I think u want to set the header text of column. any ways here is the solution.

DataGrid.Column[Column Index].HeaderText = "ColumnName";

gv.Columns[1].HeaderStyle.Width=300; //this is in pixels.

and let me know what kind of formating do u want and the last one i can't understand u want to ask.

Regards, Arslan

Re: Datagrid Colunm Header

Manas Bhardwaj14-Jul-07 4:46

Manas Bhardwaj

14-Jul-07 4:46

You can set DataFormatString="{0:d}"

DLL????

kiranp2softech13-Jul-07 19:17

kiranp2softech

13-Jul-07 19:17

Hi friends,
How to create a dll file in asp.net2.0

Re: DLL????

Sathesh Sakthivel13-Jul-07 19:53

Sathesh Sakthivel

13-Jul-07 19:53

you cannot create dll in asp.net.

Use the Class Libary option on opening new project.

Regards,

Satips. Rose | [Rose]

Don't walk in front of me, I may not follow;
Don't walk behind me, I may not lead;
Walk beside me, and just be my friend. - Albert Camus

Re: DLL????

N a v a n e e t h14-Jul-07 0:07

N a v a n e e t h

14-Jul-07 0:07

Satips wrote:
you cannot create dll in asp.net.

WHY ????

My Website | Ask smart questions

Re: DLL????

Dave Kreskowiak14-Jul-07 4:28

Dave Kreskowiak

14-Jul-07 4:28

Because ASP.NET 2.0 is not a language. It's a framework for creating web pages.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

Re: DLL????

Paul Conrad14-Jul-07 10:29

Paul Conrad

14-Jul-07 10:29

The OP asked this same question earlier and was given the same answers again Roll eyes | :rolleyes:

"Any sort of work in VB6 is bound to provide several WTF moments." - Christian Graus

Re: DLL????

Sathesh Sakthivel14-Jul-07 6:29

Sathesh Sakthivel

14-Jul-07 6:29

As Dave said it is not a Language, it is a Framework for creating the Applications.

So we cannot create dll in asp.net.

Sorry for the delay in the answer, since it is a holiday, just now, i signed in to check so i am replying you now.

Regards,

Satips. Rose | [Rose]

Don't walk in front of me, I may not follow;
Don't walk behind me, I may not lead;
Walk beside me, and just be my friend. - Albert Camus

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