Re: create a button dynamically - WPF Discussion Boards

Re: Export WPF ListView data to excel

16-Mar-09 8:02

Why do you think this has something to do with WPF? Confused | :confused:

Write a method that loops over your collection and write the data to the excel file. Here[^].

Eslam Afifi

zameb30-Aug-10 23:00

zameb

30-Aug-10 23:00

The ListView in WPF is so different to the Forms one. Unsure | :~

Maybe the problem is how to iterate inside the ListView items.
Here it is:

GridView grid = source.View as GridView;
if (grid == null)
{
    //Sorry, only for GridView views
    return;
}
foreach (GridViewColumn col in grid.Columns)
{
    //value of header is col.Header
}
foreach (Object item in source.Items)
{
    PropertyInfo[] dataFields = item.GetType().GetProperties();
    int i = 0;
    foreach (GridViewColumn col in grid.Columns)
    {
        try
        {
            //Get the name of field displayed on grid
            string strPath = ((Binding)col.DisplayMemberBinding).Path.Path;
            //Get the field value
            object propValue = GetValue(item, source.Items, strPath);
            //Value of cell is propValue
        }
        catch (Exception)
        {
        }
    }
}

I think it will be easier to export (to excel, pdf or anything) from here.

create a button dynamically

anishkannan16-Mar-09 1:59

anishkannan

16-Mar-09 1:59

Any body help me

I want to create a button dynamically when click another button,
How can write this code, only a xaml file.

Thanks....

Mark Salsbery16-Mar-09 5:42

Mark Salsbery

16-Mar-09 5:42

You want to write the code in XAML only?

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

anishkannan16-Mar-09 6:54

anishkannan

16-Mar-09 6:54

i want the concept of dynamic control creation and that control must
have the style.

Thanks...

Eslam Afifi16-Mar-09 7:49

16-Mar-09 7:49

Like this?

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="600" Width="300">
    <Grid>
        <Grid.Resources>
            <Style TargetType="{x:Type Button}">
                <Setter Property="Background" Value="Azure" />
            </Style>
        </Grid.Resources>

        <Grid.RowDefinitions>
            <RowDefinition />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>

        <Grid.Children>
            <StackPanel x:Name="stack" />
            <Button HorizontalAlignment="Center" Grid.Row="1" Content="Add button" Click="Button_Click" />
        </Grid.Children>
    </Grid>
</Window>

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

namespace WpfApplication1
{
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            var button = new Button() { Content = "Newly added button" };

            var rnd = new Random(DateTime.Now.ToBinary().GetHashCode());
            switch (rnd.Next(3))
            {
                case 0:
                    button.Background = Brushes.BlueViolet;
                    break;
                case 1:
                    var style = new Style();
                    style.Setters.Add(new Setter(Button.BackgroundProperty, Brushes.DarkBlue));
                    button.Style = style;
                    break;
            }

            stack.Children.Add(button);
        }
    }
}

Eslam Afifi

Eslam Afifi16-Mar-09 12:25

16-Mar-09 12:25

I discourage the use of this method unless you really "really" have to put your class in a single xaml file. I can't even think of a scenario where you'd have to use this method.

I've just found out that you can place both the markup and the code in the xaml file.

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="600" Width="300">
    <Grid>
        <Grid.Resources>
            <Style TargetType="{x:Type Button}">
                <Setter Property="Background" Value="Azure" />
            </Style>
        </Grid.Resources>

        <Grid.RowDefinitions>
            <RowDefinition />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>

        <Grid.Children>
            <StackPanel x:Name="stack" />
            <Button HorizontalAlignment="Center" Grid.Row="1" Content="Add button" Click="Button_Click" />
        </Grid.Children>
    </Grid>


    <x:Code>
        <![CDATA[
            public Window1()
            {
                InitializeComponent();
            }

            private void Button_Click(object sender, RoutedEventArgs e)
            {
                var button = new Button() { Content = "Newly added button" };
                var rnd = new Random(DateTime.Now.ToBinary().GetHashCode());
                
                switch (rnd.Next(3))
                {
                    case 0:
                        button.Background = Brushes.BlueViolet;
                        break;
                    case 1:
                        var style = new Style();
                        style.Setters.Add(new Setter(Button.BackgroundProperty, Brushes.DarkBlue));
                        button.Style = style;
                        break;
                }

                stack.Children.Add(button);
            }
        ]]>
    </x:Code>
</Window>

You don't have to place the code in a CDATA section. You even can do this.

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="600" Width="300">
    <Grid>
        <Grid.Resources>
            <Style TargetType="{x:Type Button}">
                <Setter Property="Background" Value="Azure" />
            </Style>
        </Grid.Resources>

        <Grid.RowDefinitions>
            <RowDefinition />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>

        <Grid.Children>
            <StackPanel x:Name="stack" />

            <x:Code>
                public Window1()
            {
                InitializeComponent();
            }

            private void Button_Click(object sender, RoutedEventArgs e)
            {
                var button = new Button() { Content = "Newly added button" };
                var rnd = new Random(DateTime.Now.ToBinary().GetHashCode());
                
                switch (rnd.Next(3))
            </x:Code>

            <Button HorizontalAlignment="Center" Grid.Row="1" Content="Add button" Click="Button_Click" />
        </Grid.Children>
    </Grid>

    <x:Code>
                {
                    case 0:
                        button.Background = Brushes.BlueViolet;
                        break;
                    case 1:
                        var style = new Style();
                        style.Setters.Add(new Setter(Button.BackgroundProperty, Brushes.DarkBlue));
                        button.Style = style;
                        break;
                }

                stack.Children.Add(button);
            }
    </x:Code>
</Window>

Eslam Afifi

anishkannan16-Mar-09 18:57

anishkannan

16-Mar-09 18:57

Thank you for Replay

That code is enough. what i am expecting.

And I have another one doubt. How can use wpf in MVP/MVC

design pattern.

Thanks...

Eslam Afifi16-Mar-09 23:07

New article to help you answer your questions on WPF

16-Mar-09 23:07

I learned the MVVM pattern from this article[^].
Read this[^] too.

Eslam Afifi

TechiGIRL15-Mar-09 21:20

TechiGIRL

15-Mar-09 21:20

Hello!
I found new article on WPF development for visualization cartographical objects. Really interesting and useful one. Do want to share it with all of you! Here is a direct link
http://techzone.enterra-inc.com/architecture/cartographical-objects-visualization-using-wpf/[^]f/

Enjoy reading!
and let's discuss it here!

Re: New article to help you answer your questions on WPF

TechiGIRL25-Mar-09 22:33

TechiGIRL

25-Mar-09 22:33

and here is a continuation for the article
direct link is here http://techzone.enterra-inc.com/architecture/algorythm-of-defining-plain-polygon-signature-point/[^]

WPf trreview Insertion with binding

thangavel198715-Mar-09 21:03

thangavel1987

15-Mar-09 21:03

I have to insert items to treeview . using data binding . i am new to WPF
Pls anyone help me
my code is

<treeview itemssource="{Binding CategoryRecordList}" name="CategoryList<br mode=" hold=" /><br mode=">

Re: WPf trreview Insertion with binding

ABitSmart15-Mar-09 21:42

ABitSmart

15-Mar-09 21:42

See here[^], here[^] and here[^]

Re: WPf trreview Insertion with binding

Eslam Afifi16-Mar-09 1:51

Popup window in silverlight

16-Mar-09 1:51

I recommend you read this article[^].

Eslam Afifi

sumit703415-Mar-09 19:31

sumit7034

15-Mar-09 19:31

Hi I have two xaml file in my project Page.xaml and page2.xaml.
I want when user click on button from page.xaml then new popup window will be open for page2.xml. I have searched some examples but they open it in a same window.

Please Help

Thanks in advance

Pete O'Hanlon15-Mar-09 23:02

Pete O'Hanlon

15-Mar-09 23:02

You have to open the second window in a dialog, see here[^] for details.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

My blog | My articles | MoXAML PowerToys

sumit703415-Mar-09 23:45

sumit7034

15-Mar-09 23:45

Thanks for the reply
But still the second window is opened in the same page.
Is there any way to open it in a other window?

Mark Salsbery16-Mar-09 6:25

Mark Salsbery

16-Mar-09 6:25

There's no "other window"s in Silverlight.

Windows are controlled by the browser, so if you want a new window you
could use something like HtmlPage.PopupWindow[^] or HtmlWindow.Navigate[^]

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]