Re: Listview - C# Discussion Boards

Yes, Marshal.SizeOf() Is equlant to sizeof() in c++ and c. It is used to call WinAPI.

But this needs to be before defining class:[StructLayout(LayoutKind.Sequential)]

Example:
[StructLayout(LayoutKind.Sequential)]
public class SomeClass
{
int i;
}

Hi,

if you are going to pass such a struct to the native world, that would be the way to go, yes.
BTW: the value will vary, depending on Win32/Win64 as an IntPtr is elastic.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Help me to validate datagrid view column to take only flaot value.

Let me see it's a cell and you want to validate it.
If only someone at Microsoft had the intelligence to to put an OnCellValidating event in the DataGridView, all your problems would be solved.

Henry Minute

Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”

Hi All,

I've a DataSet and I want to display all the data(actually each row in the DataSet) in a list view. I've do the following.

<br />
foreach( DataRow dr in ds.Tables[0].Rows )<br />
{<br />
	ListViewItem i = listView1.Items.Add(dr.Table.Rows[0]["ID"].ToString());<br />
<br />
	i.SubItems.Add(ds.Tables[0].Rows[0]["Group"].ToString());<br />
	i.SubItems.Add(ds.Tables[0].Rows[0]["FirstName"].ToString());<br />
	i.SubItems.Add(ds.Tables[0].Rows[0]["LastName"].ToString());<br />
}<br />

ds is the DataSet. My question is, first row display all the time. Means the same row in all. Can someone comment on this.

Thanks a lot Smile | :)

I appreciate your help all the time...
CodingLover Smile | :)

Solved my-self. Refer the wrong index all the time.

I do the following.

<br />
ListViewItem i = listView1.Items.Add(dr["ID"].ToString());<br />
<br />
i.SubItems.Add(dr["Group"].ToString());<br />
i.SubItems.Add(dr["FirstName"].ToString());<br />
i.SubItems.Add(dr["LastName"].ToString());<br />

Any comments appreciate?

I appreciate your help all the time...
CodingLover Smile | :)

Hi, would like to check with you guys regarding on ListView.

I done several research on Google for listview but cant find what i wanted.

Example my database have 12 records.

I want to display all 12 data into like a table form.

example

4 rows and 3 column

can anyone show me some sample please. thanks

It is a bit tricky. However I have done that.

Here I am taking a datatable as my datasource

Objective:

Col1 	Col2 	Col3 

1	2	3

4	5	6

7	8	9

10	11	12

I hope you are asking something similar to this.

Approach:

Step 1:

Create a datatable with 3 columns and 4 rows in .cs file of .aspx page PageLoad event

DataTable dtSource = new DataTable();

        #region Data Table Creation

        dtSource.Columns.Add("Col1");

        dtSource.Columns.Add("Col2");

        dtSource.Columns.Add("Col3");       

        #endregion


        #region Add Rows
        dtSource.Rows.Add("1", "2", "3");
        dtSource.Rows.Add("4", "5", "6");
        dtSource.Rows.Add("7", "8", "9");
        dtSource.Rows.Add("10", "11", "12");
        #endregion

Step 2:

Drag & drop a list view in the .aspx page

<asp:ListView ID="myListView" runat="server">
           <LayoutTemplate>
                    <asp:PlaceHolder ID="itemPlaceholder" runat="server"></asp:PlaceHolder>
                     
            </LayoutTemplate>  
            
            <ItemTemplate>
            
            </ItemTemplate>           
            
            
        </asp:ListView>

Step 3:

In the code behind, bind the ListView to the datasource(i.e. datatable)

myListView.DataSource = dtSource;

myListView.DataBind();

Step 4:

Create a user control whose .ascx will be

<table>
    <tr>
        <td>
            <asp:Label ID="lblHeaderCol1" runat="server" Text="Col1"></asp:Label>
        </td>
        <td>
            <asp:Label ID="lblHeaderCol2" runat="server" Text="Col2"></asp:Label>
        </td>
        <td>
            <asp:Label ID="lblHeaderCol3" runat="server" Text="Col3"></asp:Label>
        </td>
    </tr>
    
    <tr>
        <td>
            <asp:Label ID="lblContentColumn1" runat="server"></asp:Label>
        </td>
        <td>
            <asp:Label ID="lblContentColumn2" runat="server"></asp:Label>
        </td>
        <td>
            <asp:Label ID="lblContentColumn3" runat="server"></asp:Label>
        </td>
    </tr>
</table>

Step 5:

In the code behind of the usercontrol(.ascx) expose some properties

#region Properties

    public string Col1 { get; set; }

    public string Col2 { get; set; }

    public string Col3 { get; set; }

    public int Counter { get; set; }

    #endregion

As you can make out that the properties name are the same as the column names

Step 6:

In the Load event of the UserControl, consume those properties by the respective label controls

protected void Page_Load(object sender, EventArgs e)
    {
        lblContentColumn1.Text = Col1;

        lblContentColumn2.Text = Col2;

        lblContentColumn3.Text = Col3;

        Counter = Counter + 1;

        if (Counter > 1)
        {
            lblHeaderCol1.Text = lblHeaderCol2.Text = lblHeaderCol3.Text = String.Empty;
        }        
    }

Step 7:

The last step is to call the user control from the .aspx page

Call it from within the item template

<ItemTemplate>
            
            <uc1:MyUserControl ID="MyUserControl1" runat="server" Col1=<%# DataBinder.Eval(Container.DataItem, "Col1")%>  Col2=<%# DataBinder.Eval(Container.DataItem, "Col2")%> Col3=<%# DataBinder.Eval(Container.DataItem, "Col3")%> Counter = <%# Container.DataItemIndex %> />
            
            </ItemTemplate>

So the final ListView will look similar to this

<asp:ListView ID="myListView" runat="server">
           <LayoutTemplate>
                    <asp:PlaceHolder ID="itemPlaceholder" runat="server"></asp:PlaceHolder>
                     
            </LayoutTemplate>  
            
            <ItemTemplate>
            
            <uc1:MyUserControl ID="MyUserControl1" runat="server" Col1=<%# DataBinder.Eval(Container.DataItem, "Col1")%>  Col2=<%# DataBinder.Eval(Container.DataItem, "Col2")%> Col3=<%# DataBinder.Eval(Container.DataItem, "Col3")%> Counter = <%# Container.DataItemIndex %> />
            
            </ItemTemplate>           
            
            
        </asp:ListView>

What I am doing?

Basically I have exposed the properties from the user control similar to the columns available in the source and have kept a counter.

I am calling the user control from inside the item template ; so each time the user control will be iterated.

But in that case the headers will also be iterated. Inorder to make it unique, the counter is used which will allow the header to be displayed for only the first time.

N.B.~ This is one of the solutions that came in my mind instantly.

If if get a better idea, i will tell you that.

Or else, any kind of improvement from your side, is highly welcome.

Hope this helps.
Smile | :)

Niladri Biswas

Hi, thanks for your reply..

But tts aspx issint it?

my is an .exe application Big Grin | :-D

Hi man,

You should have mentioned that you are looking for windows based solution and not web based.

Thanks anyways.
Smile | :)

Niladri Biswas

I have an application that crunches lots of data and during the processing, the
application crashes and I get a message that says "fileappend function failed."

I am not a programmer and hope I have the right forum. My apologies if I have
the wrong one...if I do, please direct me to the proper forum.

Any ideas on how to correct this problem will be greatly appreciated.

Pete Brittain

Hi,

From some distance the tea leaves in your cup told me your disk is full.
Without giving any detail about the program, its purpose, its language, what do you expect?
Go ask the creator of your app I would say.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

modified on Thursday, June 4, 2009 4:59 AM

Zopilote32 wrote:
I am not a programmer and hope I have the right forum

You are, by definition, in the wrong forum, and on the wrong site. I would suggest you need to talk to the author of your program, but I do concur with the person who suggested you may be out of hard drive space.

Christian Graus

Driven to the arms of OSX by Vista.

Please read this[^] if you don't like the answer I gave to your question.

"! i don't exactly like or do programming and it only gives me a headache." - spotted in VB forums.

[Message Deleted]

And have you made any attempt or would you like someone to simply write it for you?

only two letters away from being an asset

Even if you where not bright enough to expect code here, would you at least get some common sense and ask in the asp.net forums? I mean if you're going to break a rule and try and get free work at least address a specialized crowd..

Check out the CodeProject forum Guidelines[^]

This[^] has the answer to your question.

Christian Graus

Driven to the arms of OSX by Vista.

Please read this[^] if you don't like the answer I gave to your question.

"! i don't exactly like or do programming and it only gives me a headache." - spotted in VB forums.

Don't delete your messages.
It results in a messy forum.

Hmmm | :|

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Believe me, his question made the place messy, too.

Christian Graus

Driven to the arms of OSX by Vista.

Please read this[^] if you don't like the answer I gave to your question.

"! i don't exactly like or do programming and it only gives me a headache." - spotted in VB forums.

Nevertheless, I prefer to keep seeing the original post so I can try and understand how the replies fit (or don't fit) the matter.

I am in favor of making messages undeletable once a reply has been posted; only additive edits should remain possible.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Yeah, that's a good suggestion.

Christian Graus

Driven to the arms of OSX by Vista.

Please read this[^] if you don't like the answer I gave to your question.

"! i don't exactly like or do programming and it only gives me a headache." - spotted in VB forums.

How do you define an additive edit, though?

What if they need to change some spelling or content?

What if they legitimately need to remove material. I know I've done this when I've reread and realised I've cut and pasted stuff twice.

For a small number of annoying users this is a large inconvenience to everyone else.

cheers,
Chris Maunder

The Code Project Co-founder
Microsoft C++ MVP

But, what about just removing the ability to delete, so they have to manually delete the text as an edit ? The sort of people we're talking about, wouldn't be smart enough to work out how to do that anyhow.

Christian Graus

Driven to the arms of OSX by Vista.

Please read this[^] if you don't like the answer I gave to your question.

"! i don't exactly like or do programming and it only gives me a headache." - spotted in VB forums.

Now you're using your noggin'

I think simply disallowing deletes until you have a certain experience quotient is the best.

cheers,
Chris Maunder

The Code Project Co-founder
Microsoft C++ MVP

Chris Maunder wrote:
change some spelling or content?

insert the new content in place, leave the old as is.
maybe: allow strike-through

Chris Maunder wrote:
legitimately need to remove material

insert a comment [TO BE DELETED] or [IGNORE THIS] or so

Chris Maunder wrote:
a large inconvenience to everyone else

if so, limit to new users (first 500 posts)
if they leave their first 500 posts intact, chances are they'll continue to do so.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.