Problem while binding data to a DropDownList in GridView's EditItemTemplate column - ASP.NET Discussion Boards

I was hoping to instead teach him how to debug his own code, one run through in the debugger should have told him what was wrong.

Christian Graus

Driven to the arms of OSX by Vista.

"I am new to programming world. I have been learning c# for about past four weeks. I am quite acquainted with the fundamentals of c#. Now I have to work on a project which converts given flat files to XML using the XML serialization method" - SK64 ( but the forums have stuff like this posted every day )

I have something of a time issue, and I need to deliver a very basic, early edition of a web site within the next two days or so. I would like to have at least:

Three horizontal 'bands':
1) a flagship photo and some text at the top
2) a horizontal photo-film (with sprocket holes etc.) underneath that, with frames containing one photo for each of several categories, where clicking one opens a set of photos in the category in the bottom band
3) a bottom band containing pages of photos for a chosen category.

I would appreciate some suggestions on the quickest and easiest way to achieve this using ASDP.NET 'dirty tricks' and technologies. I think a DataList for the film strip and bottom band will be quickest, but how can I achieve the 'sprocketed frame' look quickly?

You really gotta try harder to keep up with everyone that's not on the short bus with you.
- John Simmons / outlaw programmer.

The sprocket look is bound to be a bitmap with the filmstrip placed top and bottom with the photos in the middle. I would use a repeater, because of the level of control it gives you.

Christian Graus

Driven to the arms of OSX by Vista.

"I am new to programming world. I have been learning c# for about past four weeks. I am quite acquainted with the fundamentals of c#. Now I have to work on a project which converts given flat files to XML using the XML serialization method" - SK64 ( but the forums have stuff like this posted every day )

I haven't used this tool yet, but I watched some demo videos and it looks really cool.

Xara Web Designer

http://www.xara.com/us/[^]

hi all,
m trying to create email newsletter ,
and m putting content of the newsletter in a table and i want the user to be able to click on the table content to go to some link, it works fine on chrome but not in IE , here is my code.

//Email body is html format
<%-- <a href='someurl'>
'<table>
'newsletter data
'</table>
'</a>
--%>
and i forget something ,we cant but any script "onclick();" here because it will be disable by email engine .

thanks for all.

I don’t think you can put a table inside a link, it is not a standard (W3C) so browsers will translate it differently. Instead put your link in your cell. Then perhaps use a style to make it not look like a link.

<table border="1">
<tr>
<td>
<a href="http://www.codeproject.com" style="text-decoration:none; color:Black; display:block;">
This is my news letter
</a>
</td>
</tr>
</table>

<br />
<table border="1"><br />
  <tr><br />
    <td><br />
      <a href="http://www.codeproject.com" style="text-decoration:none; color:Black; display:block;"><br />
        This is my news letter<br />
      </a><br />
    </td><br />
  </tr><br />
</table><br />

PS.. If you are trying to trick the end user to go to your site, many of them now require you to hold down a button to follow the link.

John

Hi there,
First of all table control cant be nested in (a) tag (this will not make the content clickable), second of all you should be using tr and td tags within a table ...

To solve this you could use the following example:
<table>
<tr>
<td>
<a href="Home.aspx">Hit Me</a>
</td>
</tr>
</table>

Here you are nesting the (a) element inside the table element in which it will be clickable according to the behaviour you want.

Hope that helped !

Sincerely Samer Abu Rabie

Imagination is more important than knowledge !

Hi,
I am a beginner in .NET.
I Placed a DropDownList in GridView's EditItemTemplate field.
Whenever i click the Edit Button i am getting a runtime error stating
"object Reference not set to an instance of the object".
That is,when i try to find the DropDownList using FindControl method,it is always null.
I have tried a lot of code in both GridView's RowBound and RowEditing events.
But,all the time i am getting the same error.
Below i have given the code that i tried in RowEditing event.
It will be very helpful if anyone help me in resolving this error.

.aspx source code

<asp:gridview id="gvDocumentDetails" runat="server" autogeneratecolumns="false" width="97%" autogenerateeditbutton="true"

="" ondatabinding="gvDocumentDetails_DataBinding" onrowediting="gvDocumentDetails_RowEditing" onrowupdating="gvDocumentDetails_RowUpdating" onrowdatabound="gvDocumentDetails_RowDataBound">

<columns>

<asp:boundfield headertext="Incident ID" datafield="Incident_ID">

<asp:boundfield headertext="Application" datafield="Application">

<asp:boundfield headertext="Type" datafield="Type">

<asp:boundfield headertext="Document Details" datafield="Document_Details">

<asp:boundfield headertext="Uploaded Date" datafield="Uploaded_Date">

<asp:templatefield headertext="Approval Status">

<itemtemplate>

<asp:label id="lblDocumentStatus" runat="server" text="<%#" eval("approval_status")="" %="">/>

<edititemtemplate>

<asp:dropdownlist id="ddlApprovalStatus" runat="server" datatextfield="Approval_Status" datavaluefield="Approval_Status_ID">

.cs file

protected void gvDocumentDetails_RowEditing(object sender, GridViewEditEventArgs e)

{

int intEditIndex;

intEditIndex = e.NewEditIndex;

gvDocumentDetails.EditIndex = e.NewEditIndex;

PopulateApprovalStatus(intEditIndex);

}

protected void PopulateApprovalStatus(int intRowIndex)

{

DataSet dsApprovalStatus = new DataSet();

DropDownList ddlApprovalStatus = null;

ObjReviewDocumentsBL.LoadApprovalStatus(out dsApprovalStatus);

ddlApprovalStatus = (DropDownList)gvDocumentDetails.Rows[intRowIndex].Cells[6].FindControl("ddlApprovalStatus");

ddlApprovalStatus.DataSource = dsApprovalStatus;

ddlApprovalStatus.DataBind();

}

I have checked the "dsApprovalStatus" dataset while debugging,and it has been filled by the LoadApprovalStatus() function.But, i m getting error in the following line.

ddlApprovalStatus.DataSource = dsApprovalStatus;

And ddlApprovalStatus value is null.

Thanks in advance...

Yazhini

Hi there,
I think you already knew half the solution to your problem ... the returned null object from FindControl is because he really cant find it in Cell[6]... well try going more deeper ... use the debugger to see all controls inside Cell[6] and then in each one try finding your dropdownlist ... I think all you have to do is go one step deeper as I recall for the EditTemplate.

Sincerely Samer Abu Rabie

Imagination is more important than knowledge !

Yes...i might have been given as Cell[5].But,that alone is not the mistake.
I have resolved the problem now...
I think the main mistake is that i haven't filled the Grid at the RowEditing event.
After doing that,i got it.
Anyhow,thanks for helping me...
Now,i have another doubt.
How to retrive the cell value of the BoundField in the RowUpdating event?.
For example,i have to retrive the IncidentNo whose ApprovalStatus has been edited and have to pass both the ApprovalStatus and IncidentNo values to another function.
Since The IncidentNo column is a BoundField control,how to get it's value in the RowUpdating event?

Yazhini

i am taking a button in aspx page,so we want that when we click on button so my hp scanner will start.plz give some understandable code.
thanks and regrds
vivek

Is your scanner on the server??

ya my scanner is in the server

So are you emailing somebody to get them to run round and put a bit of paper in the scanner before you click the button on your client machine?

i have prepare an aspx page,in the page we are giving one field of imagemap.so we will take image by call hp scanner,

ya i will put any paper or photo in my machine and when we click in my button so scanner will start

so,plz give me some code for this

The biggest problem with outsourcing is clueless individuals who tell clueless clients that anything is possible, then hit the web and ask other people to do the impossible for them.

Christian Graus

Driven to the arms of OSX by Vista.

"I am new to programming world. I have been learning c# for about past four weeks. I am quite acquainted with the fundamentals of c#. Now I have to work on a project which converts given flat files to XML using the XML serialization method" - SK64 ( but the forums have stuff like this posted every day )

sorry,my scanner is in client side

In that case, dream on. I suggest you buy a book on ASP.NET and read it. If you know what ASP.NET is and does, you'll know why you're not going to control a users scanner.

Christian Graus

Driven to the arms of OSX by Vista.

"I am new to programming world. I have been learning c# for about past four weeks. I am quite acquainted with the fundamentals of c#. Now I have to work on a project which converts given flat files to XML using the XML serialization method" - SK64 ( but the forums have stuff like this posted every day )

sorry,my scanner is in client side

Hmm did you guys explain him about the 3rd option? The possiblity that his scanner could be in between client and server?

Starting to think people post kid pics in their profiles because that was the last time they were cute - Jeremy.

Sorry pal, you are as confused where the scanner is as to what asp.net can accomplish.

There is no way you can do this from asp.net. Alternatively you can write a bloated ActiveX to accomplish what you need, but that comes with caveat.

Yusuf
May I help you?

so, wht ur conclusion it will not possible

Our conclusion is that you're more clueless than most. Why is it that you're not even reading our posts ? I suspect it's that you don't understand anything we're saying, b/c you're not a programmer at all.

An ActiveX component could be written to do this in IE only. This would require use of C++, a language that only real programmers use. So, for you, yes, this is impossible

Christian Graus

Driven to the arms of OSX by Vista.

"I am new to programming world. I have been learning c# for about past four weeks. I am quite acquainted with the fundamentals of c#. Now I have to work on a project which converts given flat files to XML using the XML serialization method" - SK64 ( but the forums have stuff like this posted every day )

k suppose i m not a prograamer at all but wht u providing
me this is applying in windos appl.
if u prograammer so plz do wht is my requirement