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European Silverlight 4 Hosting :: How to Use "ClickMode" for Button Control in Silverlight?

clock September 29, 2011 08:10 by author Scott

In this article let us see the different ways of using the property ClickMode for a Button Control in a silverlight application. As usual, open the visual studio and select the silverlight project.

First let us drag three different Button and TextBlock controls to Stack Panel as shown below into MainPage.xaml. Here i used a property
called "ClickMode" for all the three button controls, But the value assigned to it is different.

For the first button i assigned the value Hover to the ClickMode property, It means that the
click event handler takes place whenever the mouse is hovered onto this button.

For the
second button i assigned the value Press to the ClickMode property, It means that the click event handler takes place whenever the mouse is clicked on this button.

For the third button i assigned the value Release to the ClickMode property, It means that the click event handler takes place whenever the mouse is released from this button. 

        <Button x:Name="btn1" Margin ="5" HorizontalAlignment="Left"
            Foreground="Black" Width="320" Click="OnClick1"
            Content="On Mouse Hover this text will appear below"
ClickMode
="Hover" />


        <TextBlock x:Name="text1" Margin ="0,8,0,0" />

        <Button x:Name="btn2" Margin ="5,5,5,5"  HorizontalAlignment="Left"             Foreground="Black" Width="320" Click="OnClick2"
            Content="On Button Press this text will appear below" ClickMode="Press" />

        <TextBlock x:Name="text2" Margin="0,8,0,0" />

<Button x:Name="btn3" Margin ="5,5,5,5" HorizontalAlignment="Left" Click="OnClick3" Width="320" Content="On Button Release this text will appear below" ClickMode="Release"/>

        <TextBlock x:Name="text3" Margin ="0,8,0,0" />

Now I am writing the code for button click events in the MainPage.xaml.cs

public
MainPage()
        {
            InitializeComponent();          

        }
        void OnClick1(object sender, RoutedEventArgs e)
        {
            btn1.Foreground = new SolidColorBrush(Colors.Blue);
            text1.Text = "On Mouse Hover this text will appear below.";
            text2.Text = "";
            text3.Text = "";
        }

        void OnClick2(object sender, RoutedEventArgs e)
        {
            btn2.Foreground = new SolidColorBrush(Colors.Green);
            text1.Text = "";
            text2.Text = "On Button Press this text will appear below.";
            text3.Text = "";
        }

        void OnClick3(object sender, RoutedEventArgs e)
        {
            btn1.Foreground = new SolidColorBrush(Colors.Green);
            btn2.Foreground = new SolidColorBrush(Colors.Blue);
            text1.Text = "";
            text2.Text = "";
            text3.Text = "On Button Release this text will appear below.";
        }

Thats it!!! Just press F5 and see the result. 


The output for the first Button looks like as



The output for the second Button looks like as



Note: For the people who find it difficult to integrate the above
code, I am pasting the complete code here.

MainPage.Xaml:

<UserControl x:Class="SilverlightTest1.MainPage"

    xmlns=http://schemas.microsoft.com/winfx/2006/xaml/presentation
    xmlns:x=http://schemas.microsoft.com/winfx/2006/xaml
    xmlns:d=http://schemas.microsoft.com/expression/blend/2008
    xmlns:mc=http://schemas.openxmlformats.org/markup-compatibility/2006
   xmlns:sdk=http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400">

    <StackPanel x:Name="LayoutRoot" Background="White" Margin="10">

        <Button x:Name="btn1" Margin ="5" HorizontalAlignment="Left"
            Foreground="Black" Width="320" Click="OnClick1"
            Content="On Mouse Hover this text will appear below" ClickMode="Hover" />

        <TextBlock x:Name="text1" Margin ="0,8,0,0" />

        <Button x:Name="btn2" Margin ="5,5,5,5"  HorizontalAlignment="Left"
            Foreground="Black" Width="320" Click="OnClick2"
            Content="On Button Press this text will appear below" ClickMode="Press" />

        <TextBlock x:Name="text2" Margin="0,8,0,0" />

<Button x:Name="btn3" Margin ="5,5,5,5" HorizontalAlignment="Left" Click="OnClick3" Width="320" Content="On Button Release this text will appear below" ClickMode="Release"/>

        <TextBlock x:Name="text3" Margin ="0,8,0,0" />

    StackPanel>

UserControl>

MainPage.Xaml.cs:

public MainPage()
        {
            InitializeComponent();           

        }
        void OnClick1(object sender, RoutedEventArgs e)
        {
            btn1.Foreground = new SolidColorBrush(Colors.Blue);
            text1.Text = "On Mouse Hover this text will appear below.";
            text2.Text = "";
            text3.Text = "";
        }

        void OnClick2(object sender, RoutedEventArgs e)
        {
            btn2.Foreground = new SolidColorBrush(Colors.Green);
            text1.Text = "";
            text2.Text = "On Button Press this text will appear below.";
            text3.Text = "";

        }

        void OnClick3(object sender, RoutedEventArgs e)
        {
            btn1.Foreground = new SolidColorBrush(Colors.Green);
            btn2.Foreground = new SolidColorBrush(Colors.Blue);
            text1.Text = "";
            text2.Text = "";
            text3.Text = "On Button Release this text will appear below.";
        }

Happy coding



European WCF Hosting :: Use dataset across WCF service

clock September 16, 2011 06:50 by author Scott

Some times you need to return a set of data from a WCF service and When you are working with ado.net, dataset is the obvious reason you wish at your client side. But passing dataset can make service less interoportable because in that case you are forced to use dataset on your client code. Second point is that dataset might become very bulky as per size of the data grows. Instead, passing dataset we can pass compressed byte array of dataset from WCF service and consume it like a byte array on client end. After Uncompression, either you can convert it into dataset or you can use this XML in any other form you want.

For this, lets first create a WCF service:

[OperationContract]
public byte[] GetEmployee(string BranchId)
{
string sQ = "Select EmpId, EmployeeName from EmployeeMaster";

SqlConnection objConn = new SqlConnection("Data Source=[YourServer];Initial Catalog=[Database];User ID=[UserName];Password=[Password];MultipleActiveResultSets=True");
SqlCommand objCom = new SqlCommand(sQ, objConn);
SqlDataAdapter objDa = new SqlDataAdapter(objCom);
DataSet objDs = new DataSet();
objDa.Fill(objDs);
//Now we'll convert dataset into byte array and compress it using gzStream.
byte[] binaryDataResult = null;
MemoryStream memStream = new MemoryStream();
GZipStream gzStream = new GZipStream(memStream, CompressionMode.Compress);
objDs.WriteXml(gzStream);
binaryDataResult = memStream.ToArray();
gzStream.Close();
memStream.Close();
return binaryDataResult;
}

Here, We are first filling dataset from database then after compression using GZipStream, we are converting it to byte array. At client end we will get this byte array and we'll again follow these steps in reverse order.

ServiceClient s = new ServiceClient();
byte[] btEmployee = (byte[])s.GetEmployee("0");
if (btEmployee != null)
{
MemoryStream mEmployee = new MemoryStream(btEmployee);
GZipStream gStreamEmployee = new GZipStream(mEmployee, CompressionMode.Decompress);
DataSet objDsEmployee = new DataSet();
objDsEmployee.ReadXml(gStreamEmployee);
gStreamEmployee.Close();
gvEmployee.DataSource = objDsEmployee;
gvEmployee.DataBind();
}



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