ASP.NET

How to display Image in grid view ?

23-Apr-09 23:22

Hi, do you have source code? pls post it.

you can try

sqldataadapter da = new sqldataadapter();
datatable dt = new datatable();
da.fill(dt);

grid1.datasource = dt;
grid1.databind()

cocoonwls23-Apr-09 20:47

23-Apr-09 20:47

Dear all,

I am using VS2005, asp.net with c# and sql server2005. I am storing my picture path in database. Can anyone suggest me how can i display the picture according to the picture path in database into a gridview?

In my case,the grid view will show name and description then the last field will be the image.

Any opinion or suggestion are welcom.

regards
cocoonwls

SayreCC23-Apr-09 20:52

23-Apr-09 20:52

Hi, you can Add in your grid a image field.

<asp:GridView ID="GridView1" runat="server">
<Columns>
<asp:ImageField>
</asp:ImageField>
</Columns>
</asp:GridView>

then this imagefield have properties to call the image from your database.

like: DataImageUrlField = dr("image").tostring();

Hope this one Can Help

Thanks

cocoonwls23-Apr-09 21:41

23-Apr-09 21:41

Hi sayrecollado,

thanks for your quick reply. But may i know where to add the DataImageUrlFiled?

regards
cocoonwls

Kaushal Arora23-Apr-09 21:56

Kaushal Arora

23-Apr-09 21:56

Add the tag in the Gridview like this.

<asp:GridView>
<Columns>
<asp:imagefield dataimageurlfield='<%# DataBinder.Eval(Container.DataItem, "imagepath") %>'/>                            
</columns>
</asp:GridView>

Where imagepath is the Column of the Dataset having image path.

This will automatically display the image when you will bind the dataset to gridview.

Regards,
Kaushal Arora

cocoonwls23-Apr-09 22:48

23-Apr-09 22:48

Hi, thanks

I will try it and come back to you Smile | :)

regards
cocoonwls

SayreCC23-Apr-09 22:23

23-Apr-09 22:23

Hi,
DataImageUrlField from your Grid properties

Like this:

<asp:GridView>
<Columns>
<asp:imagefield dataimageurlfield="ImgURL"/>
</columns>
</asp:GridView>

ImgURL field from your database tablename.columnfield

Abhijit Jana23-Apr-09 22:57

Abhijit Jana

23-Apr-09 22:57

cocoonwls wrote:
I am using VS2005, asp.net with c# and sql server2005. I am storing my picture path in database. Can anyone suggest me how can i display the picture according to the picture path in database into a gridview?

Yes!
Displaying Image in Gridview from Database

cheers,
Abhijit
CodeProject MVP

cocoonwls23-Apr-09 23:30

Event Handling in Dynamic UserControls..

23-Apr-09 23:30

Hi Abhijit,

That is a great article for a newbie in asp.net like me. But my image are located in C:\myFolder, so how can i display it from there? the path which i store in database is "C:\myFolder\img.gif". I saw in your article you always have the symbol "~", could you tell me why is like that?

thanks in advance,
and thanks for those reply me question~

regards
cocoonwls

Technobizz23-Apr-09 20:33

Technobizz

23-Apr-09 20:33

Hi All,

Another problem i've is how do i handle events in dynamic usercontrol.
Actually i've a User Review Form in which i'm saving data on submit click event but as soon i click on submit the page goes off... as the page is also a dynamic page so what do i do. Moreover the submit even doesn't work as no data is being saved. I tried with

Response.write but nothing comes on page.

So please help me with this.

Regards

Paritosh Tripathi
B.Tech. (C.S.)
BrainTechnosys Ltd.

Re: Event Handling in Dynamic UserControls..

SayreCC23-Apr-09 20:45

Sys.WebForms.PageRequestManagerParserErrorException

23-Apr-09 20:45

Hi, please post your code.

Thanks

Member 335171923-Apr-09 20:31

Member 3351719

23-Apr-09 20:31

I am facing a very critical issue associated with AJAX asynchronous postback. I am really running short of time for releasing the product.

Let me explain the scenario here.

We are supposed to create a web application to export data fetched from database to an excel file and download at client machine. And as we have specific request from client to use ajax popup for implementing this, we have used Ajax Modal Popup and a progress bar to show the status of the process and a download link button to invoke download, both contained in Update Panel.

.Net Framework : 3.5
Ajax Version : 3.0.20229.0

We have implemented this as folows:

<contenttemplate>
<cc1:modalpopupextender id="PopUpModalPopupExtender" targetcontrolid="PopUpDiv" runat="server" xmlns:cc1="#unknown">
PopupControlID="pnlPopup" DropShadow="False">

<asp anel="" id="pnlPopup" runat="server">

<asp:image id="imgGlobalProcessing" runat="server" imageurl="~/App_Themes/MyApp/images/progress.gif" xmlns:asp="#unknown">
Progressing ...

br mode="hold" />

<asp:linkbutton id="hlnkExcel" runat="server" text="Excel" onclick="hlnkExcel_Click" xmlns:asp="#unknown">

<triggers> <asp:asyncpostbacktrigger controlid="hlnkExcel" xmlns:asp="#unknown">
--Code Behind--

private void ExportToExcel(DataSet dsExport, string[] sHeaders, string[] sFileds, ExportFormat FormatType, string FileName)
{
MemoryStream stream = new MemoryStream();
try
{
response.Clear();

if (FormatType == ExportFormat.CSV)
{
response.ContentType = "text/csv";
response.AppendHeader("content-disposition", "attachment; filename=" + FileName);

}
else
{
response.ContentType = "application/vnd.ms-excel";
response.AppendHeader("content-disposition", "attachment; filename=" + FileName);
}
XmlTextWriter writer = new XmlTextWriter(stream, Encoding.UTF8);
System.IO.StringWriter sw = new System.IO.StringWriter();
CreateStylesheet(writer, sHeaders, sFileds, FormatType);
writer.Flush();
stream.Seek(0, SeekOrigin.Begin);
XmlDataDocument xmlDoc = new XmlDataDocument(dsExport);
XslTransform xslTran = new XslTransform();
xslTran.Load(new XmlTextReader(stream), null, null);
xslTran.Transform(xmlDoc, null, sw, null);
//reads to a stream
byte[] byteArray = Encoding.ASCII.GetBytes(sw.ToString());
stream = new MemoryStream(byteArray);
// Buffer to read 10K bytes in chunk:
byte[] buffer = new Byte[10000];
// Length of the file:
int length = 0;
// Total bytes to read:
long dataToRead = 0;
dataToRead = stream.Length;
response.Cache.SetCacheability(HttpCacheability.Private);
response.Expires = -1;
response.Buffer = false;
length = stream.Read(buffer, 0, Convert.ToInt32(stream.Length));
response.OutputStream.Write(buffer, 0, length);
response.Flush();
stream.Close();
response.Close();
}
catch (ThreadAbortException Ex)
{
string ErrMsg = Ex.Message;
}
catch (Exception Ex)
{
throw Ex;
}
finally
{
if (stream != null)
{
//Close the file.
stream.Close();
}
response.Close();
}
}

But while running the application we are getting the following error:

Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.

As a solution for this I tried different techniques which i have listed below.

1. Set EnableEventValidation=false for the Page.
2. In the Application error event i put the Context.ClearErrors()
3. Disabled the cacheRolesInCookie in roleManager in Web.config
4. Used the Response.outputstream.write() instead of Response.Write() method
5. Cretae an iframe in the ascx control

I am really finding myself in a helpless situation. I would really appreciate any help on this.

Thanks in advance
Regards
Lini

plz help me to constuct binary tree

Any_India23-Apr-09 20:21

Any_India

23-Apr-09 20:21

hi plz anyone in this fourm able tohelp me
My problem
i m constucting multilevel marketing project(mlm).So need to construct binary tree.i hav a database in sql server.in database i hav parent id and child id of all member.i want to display this tree so that every member an able to show there all child member.plz give me code or logic to diplay this tree.

thanks in advance

Re: plz help me to constuct binary tree

Colin Angus Mackay23-Apr-09 21:06

Colin Angus Mackay

23-Apr-09 21:06

Any_India wrote:
multilevel marketing project(mlm).

Oohh! A pyramid scheme.

If you are using SQL Server 2008 use the HierarchyID type - that is designed exactly for what you want.

If this doesn't help then I suggest you ask in the correct forum. You asked a database question, not an ASP.NET question.

*Developer Day Scotland - Free community conference Delegate Registration Open

Re: plz help me to constuct binary tree

Any_India23-Apr-09 21:14

Any_India

23-Apr-09 21:14

actualy i need to display tree in asp.net page where i will provide parent and child name or id.i need the logic to traverse and disply tree with member name...tree like bellow

Sniff | :^)

Menu In ASP.net

Pranav Kalyani23-Apr-09 20:03

Pranav Kalyani

23-Apr-09 20:03

Hi Friends,

I'm using ASP.net 2.0 with VB. I want to create Horizontal menu with submenu that open verticully.

Problem :
1.But problem in frame.. if i'm taking frame then the length of frame became same length of vertical menu ....
2.Also I want call one page of that include menu code & I called the page at all pages so my time & code reduce

Please reply me as soon as possible...

On my mail address : pranav.kalyani@gmail.com

Re: Menu In ASP.net

Abhijit Jana23-Apr-09 20:08

Abhijit Jana

23-Apr-09 20:08

Pranav Kalyani wrote:
1.But problem in frame.. if i'm taking frame then the length of frame became same length of vertical menu ....

are putting menu control inside IFrame ? Why ?

Pranav Kalyani wrote:
Also I want call one page of that include menu code & I called the page at all pages so my time & code reduce

Pranav Kalyani wrote:
Please reply me as soon as possible...

On my mail address : pranav.kalyani@gmail.com

cheers,
Abhijit
CodeProject MVP

Re: Menu In ASP.net

SayreCC23-Apr-09 20:48