ASP.NET

2-Nov-09 20:36

Hey.
I am working on application in which I want to create dynamic controls and retrives them in html string.

for example.

public string CreateControl()
{
HtmlTable hTable = new HtmlTable();
hTable.CellPadding = 2;
hTable.CellSpacing = 2;
hTable.Width = "100%";

HtmlTableRow hRow = new HtmlTableRow();
HtmlTableCell hCell = new HtmlTableCell();

hCell.InnerText = "Username";
hRow.Cells.Add(hCell);
hTable.Rows.Add(hRow);
// Now here I want to return created controls in html string.
}

It should be like this
<table CellPadding=2 CellSpacing = 2 Width=100><tr><td>Username</td></tr></table>

Thanks
Imrankhan

please don't forget to vote on the post that helped you.

Christian Graus2-Nov-09 20:41

2-Nov-09 20:41

Your best bet to do that, is to use a string builder to generate the HTML yourself.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Imran Khan Pathan2-Nov-09 20:49

2-Nov-09 20:49

Christian Graus wrote:
Your best bet to do that, is to use a string builder to generate the HTML yourself.

I have to write all controls in HTML and I dont want to write inlinne code at server side. I know It is possible because I had done it before one year ago when I worked on custom control but now I forget it. D'Oh! | :doh:

regard
Imrankhan

please don't forget to vote on the post that helped you.

Christian Graus2-Nov-09 20:51

2-Nov-09 20:51

You're right, 5 seconds with google got me this:

public string RenderControl(Control ctrl) 
{
    StringBuilder sb = new StringBuilder();
    StringWriter tw = new StringWriter(sb);
    HtmlTextWriter hw = new HtmlTextWriter(tw);

    ctrl.RenderControl(hw);
    return sb.ToString();
}

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Imran Khan Pathan2-Nov-09 21:02

2-Nov-09 21:02

Thanks Christian.

please don't forget to vote on the post that helped you.

sashidhar2-Nov-09 21:28

sashidhar

2-Nov-09 21:28

Imran Khan Pathan wrote:
please don't forget to vote on the post that helped you.

LatestArticle :Log4Net
Why Do Some People Forget To Mark as Answer .If It Helps.

Christian Graus2-Nov-09 22:33

2-Nov-09 22:33

ROTFL - yes, that is quite ironic.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Imran Khan Pathan2-Nov-09 22:38

2-Nov-09 22:38

sashidhar wrote:
LatestArticle :Log4Net
Why Do Some People Forget To Mark as Answer .If It Helps.

I tried to give him 5 vote but it did't work. when I click on button to vote, it goes to continuous process then I have to refresh page again. I am not able to vote any post here.

please don't forget to vote on the post that helped you.

Abhishek Sur2-Nov-09 21:24

Abhishek Sur

2-Nov-09 21:24

Imran Khan Pathan wrote:
hCell.InnerText = "Username";
hRow.Cells.Add(hCell);
hTable.Rows.Add(hRow);
// Now here I want to return created controls in html string.

Now use the following to get the string :

StringBuilder sb = new StringBuilder();
StringWriter tw = new StringWriter(sb);
HtmlTextWriter hw = new HtmlTextWriter(tw);
hTable.RenderControl(tw);
string renderedoutput = sb.ToString();

Now find the control string from the object, inspect renderedoutput.
Rose | [Rose]

Abhishek Sur
Don't forget to click "Good Answer" if you like this Solution.
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file upload and repeater

m@dhu2-Nov-09 19:47

2-Nov-09 19:47

im using repeater control.had a edit button which redirect to another page(edit.aspx).
in edit.aspx i had few textboxes,ddl's and fileupload controls for images..
using sessions im transferring data of employees from repeater page to edit.aspx page.
similarly i want to transfer images of that particular employee..
tried using handler.ashx im gettin the last uploaded image(image control) for every employee...
help me.... Confused | :confused:

repeater page

 protected void Repeater1_ItemCommand1(object source, RepeaterCommandEventArgs e)
   {
    }
if (e.CommandName == "edit")
       {
          // used session to transfer data
          // session["empname"]=dr["empname"]
       }

edit.aspx

Image1.ImageUrl = "handler3.ashx?staffID=" + ("staffID");
        TextBox5.Text = Session["headline"].ToString();

Christian Graus2-Nov-09 19:50

2-Nov-09 19:50

madhukk wrote:
using sessions im transferring data of employees from repeater page to edit.aspx page.

Why not just pass it on the URL ?

madhukk wrote:
similarly i want to transfer images of that particular employee..

Where do you store them ?

madhukk wrote:
Image1.ImageUrl = "handler3.ashx?staffID=" + ("staffID");
TextBox5.Text = Session["headline"].ToString();

What are you writing this for ? Is it for your own study ? Will it ever be used by anyone ?

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

m@dhu2-Nov-09 19:58

2-Nov-09 19:58

im storing in sql server.

this is used for my project...

Christian Graus2-Nov-09 20:10

2-Nov-09 20:10

OK, so you're writing it for yourself, or for someone to use ?

Why not just pass the id of the image back to the main page then and load it from there ?

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Christian Graus2-Nov-09 20:51

2-Nov-09 20:51

Do you not want to be helped anymore ?

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

m@dhu2-Nov-09 22:07

2-Nov-09 22:07

passed id to imageurl of image using session...
now i got it thanks...
and im trying to display thumbnail of the uploaded image.
used temporary data table, its working but as i had many uploads its some complicated...
any other method to display uploded image as thumbnail in image control...
thanks

Christian Graus2-Nov-09 22:20

2-Nov-09 22:20

madhukk wrote:
used temporary data table, its working but as i had many uploads its some complicated...
any other method to display uploded image as thumbnail in image control...

The image is associated with the user, right ? So, just write a http handler that takes the id of the image or the user on the query string, looks up the data and returns it. Make this the URL for your image.

madhukk wrote:
passed id to imageurl of image using session...

I'm not sure why you're asking me for advice, as you appear to, in every step, doing the opposite of what I've suggested. Filling your session with all this data is going to affect performance.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

m@dhu2-Nov-09 23:22

2-Nov-09 23:22

can we display the thumbnail of image before inserting into database....

Christian Graus3-Nov-09 8:38

3-Nov-09 8:38

Why would you want to ? What is it that you're trying to do ? If you'd answer this question it might help me make a recommendation.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

m@dhu3-Nov-09 17:49

3-Nov-09 17:49

i want to display the uploaded image once i browse through fileupload control.. but before it is saved in database to check the image uploaded correctly or not..

Christian Graus3-Nov-09 19:26

3-Nov-09 19:26

You can't do that, because until it exists somewhere on your system, you can't send it back to the client. To send it back as a byte stream requires a seperate page or HTTP handler. It's just not possible.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

m@dhu3-Nov-09 21:23

3-Nov-09 21:23

using http handler im getting image to a page..
im unable to get all the three images... only 1st image is displayed...

//SqlCommand select stmt "select image1,image2,image3 from reviews11 where  
//      staffid=" + staffid
        SqlDataReader dr = command.ExecuteReader();
        dr.Read();
        
            context.Response.BinaryWrite((Byte[])dr[0]);
            cnn.Close();
            context.Response.End();

//another page
        Image1.ImageUrl = "handler3.ashx?staffID=" +     
                                            Session["staffid"].ToString();

Cart

KhandelwalA2-Nov-09 19:40

KhandelwalA

2-Nov-09 19:40

I hv created cart dynamically at runtime through datatable............and i assigned it to the source of a datalist..............nw i want to edit quantity of products through datalist dynamically..........i tried many times.......but its not wrking properly.......this is my code.....

<br />
Dim dt As DataTable = Session("Cart")<br />
        Dim dr As DataRow<br />
        For i As Integer = 0 To DataList1.Items.Count - 1<br />
            Dim txt As Integer = CType(DataList1.Items(i).FindControl("txtQty"), TextBox).Text<br />
            Dim hf As Integer = CType(DataList1.Items(i).FindControl("hfatc"), HiddenField).Value<br />
            Dim val As Integer = Convert.ToInt32(txt)<br />
            For Each dr In dt.Rows<br />
                If dr("ItemNo") = hf Then<br />
                    dr("ItemQty") = val<br />
                    Session("Cart") = dt<br />
                    DataList1.DataSource = dt<br />
                    DataList1.DataBind()<br />
                    lblTtl.Text = "Rs." & GetItemTotal()<br />
                End If<br />
            Next<br />
        Next<br />

plz tell me.........where i m lacking behind.............is there any other way to do it.........
plz guide me a bit......... Smile | :)

Re: Cart

Christian Graus2-Nov-09 19:48