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How to Move Button Beside Text Boxes in WPF using WrapPanel

I am new to WPF. I have a Button.I want to create Dynamic textBoxes.when ever I got the focus on dynamic textbox the button move to beside textbox. I dont know how to do this. please help me
<Grid Name="mymy" HorizontalAlignment="Left" Height="243" Grid.Column="0" Grid.Row="0" VerticalAlignment="Top" Width="263" Margin="462,105,0,0" Grid.RowSpan="2" >
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<WrapPanel Grid.Column="1" x:Name="abc" HorizontalAlignment="Left" Height="232" Margin="0,0,-250,-218" VerticalAlignment="Top" Width="262" Grid.Row="1"/>
</Grid>
<!--<DockPanel Name="mymy1" HorizontalAlignment="Left" Height="191" LastChildFill="True" Margin="424,94,0,0" VerticalAlignment="Top" Width="282" Grid.RowSpan="2"/>-->
.cs code
private void button_Click(object sender, RoutedEventArgs e)
{
txtSource = new TextBox();
txtSource.MinHeight = 15;
txtSource.Width = 100;
txtSource.Height = 25;
txtSource.Name = "txtSource";
//Binding txtBinding = new Binding("PurchaseOrder.PickupSrcCodeName"); /*txtBinding.Mode = BindingMode.OneWay;*/
//txtSource.SetBinding(TextBox.TextProperty, txtBinding);
ColumnDefinition colDef1;
colDef1 = new ColumnDefinition();
mymy.ColumnDefinitions.Add(colDef1);
RowDefinition rowDef1;
rowDef1 = new RowDefinition();
mymy.RowDefinitions.Add(rowDef1);
++count;
abc.Children.Add(txtSource);
Grid.SetColumn(txtSource, count);
Grid.SetRow(txtSource, 0);
txtSource.GotFocus += t_GotFocus;
txtSource.TextChanged += this.t_TextChanged;
}
private void t_TextChanged(object sender, RoutedEventArgs e)
{
button.Visibility = Visibility.Visible;
}
enter image description here

Welcome to SO.
Consider these two things:
It's extremely bad habit to change the layout of a grid at run time (and by layout I mean rows and columns)
Just the same way that you set your textboxes positions in your grid you can position your button within it as well. You just need to create the rows and columns required by it before head.
My opinion here is you should have a stack layout adding controls to it dynamically. That control then can be custom control consisting of a grid with a text box and a position for button (or maybe a button that can be hidden or visible with a property)
If you like my idea please see this to know how to create custom controls.

WPF C# Paging in Wrap Panel

i populated some text ( i name them as questions) from database but in my wrap panel i can only display 3 questions , the rest of the questions are being cut-off , i have more than 3 questions , how can i do a paging in wrap panel to display the rest of the question on the panel itself? i populate the questions by for loop like this:
for( int i= 0 ; i<lstQuestion.Count()-2; i++)
{
TextBlock tb = new TextBlock(); // Question
tb.FontSize = 19;
tb.FontWeight = FontWeights.Bold;
tb.Text = lstQuestion[i].QuestionContent;
tb.TextWrapping = TextWrapping.Wrap;
wrapPanel1.Children.Add(tb);
TextBox tbox = new TextBox();
if (lstQuestion[i].Answer.Trim().Length > 0) // Textbox for user to input answer in every question
{
tbox.FontSize = 19;
tbox.Width = 250;
tbox.Height = 50;
tbox.PreviewDrop += new DragEventHandler(tbox_PreviewDrop);
tbox.Focusable = false; // Disallow user to input anything into it.
wrapPanel1.Children.Add(tbox);
}
answers.Add(lstQuestion[i].Answer);
if (lstQuestion[i].QuestionNo != lstQuestion[i + 1].QuestionNo) // add spacing between question
{
StackPanel sp = new StackPanel();
sp.Width = 1010;
wrapPanel1.Children.Add(sp);
Label spacing = new Label();
spacing.Width = 1010;
spacing.Content = "";
wrapPanel1.Children.Add(spacing);
}
} // end of for each loop.
And in my xaml :
<Grid>
<WrapPanel HorizontalAlignment="Center" Name="wrapPanel1" VerticalAlignment="Center" Height="400" Width="1038" Margin="0,77,0,43" />
<WrapPanel Height="80" HorizontalAlignment="Center" Name="wrapPanel2" VerticalAlignment="Top" Background="Aquamarine" Width="1000">
</WrapPanel>
<Button Content="Check" Height="37" HorizontalAlignment="Center" Name="button1" VerticalAlignment="Bottom" Width="90" FontSize="24" Margin="474,0" Click="button1_Click" />
</Grid>
Wrappanel1 is where i put my questions and textbox ( wrap panel 1 is the panel that i want to do paging in ) , wrappanel2 is another panel where choices of answers are there.
As you can see from the grey arrow , there is still more text , but it just stops there at the end of the scroll.

Put your wrapPanel1 inside a ScrollViewer.
<ScrollViewer VerticalAlignment="Center" HorizontalAlignment="Center" Height="400" Width="1038">
<WrapPanel Name="wrapPanel1" />
</ScrollViewer>
Try arranging your UI in XAML with RowDefinitions
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="80"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="40"></RowDefinition>
</Grid.RowDefinitions>
<WrapPanel Grid.Row="0" HorizontalAlignment="Center" Name="wrapPanel2" Background="Aquamarine" Width="1000"></WrapPanel>
<ScrollViewer Grid.Row="1" Height="400" Width="1038" CanContentScroll="True" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
<WrapPanel Name="wrapPanel1"/>
</ScrollViewer>
<Button Grid.Row="2" Content="Check" Margin="5" HorizontalAlignment="Center" Name="button1" VerticalAlignment="Bottom" Width="90" FontSize="24" Click="button1_Click" />
</Grid>

Silverlight: Add border around grid

I have a grid that I need to put into a border, doing this via XAML is easy
but how do I do this via C#?
everything that I have found thus far wants to add the border around each cell.
I need it to come out looking the same way XAML does it, please help!
I can not get the XAML to post correctly here:
<Border Grid.Column="1"
Grid.Row="0"
Background="AliceBlue"
BorderBrush="Black"
BorderThickness="4"
x:Name="Side6"
Visibility="Collapsed">
<UIElement.Projection>
<PlaneProjection RotationY="-90" />
</UIElement.Projection>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"></ColumnDefinition>
<ColumnDefinition Width="100"></ColumnDefinition>
<ColumnDefinition Width="100"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="100"></RowDefinition>
<RowDefinition Height="100"></RowDefinition>
<RowDefinition Height="100"></RowDefinition>
</Grid.RowDefinitions>
<Button Grid.Column="2" Grid.Row="1" Click="RotateRight_Click">
<Button.Content>
<StackPanel>
<TextBlock HorizontalAlignment="Center">Rotate Right</TextBlock>
<TextBlock HorizontalAlignment="Center">To</TextBlock>
<TextBlock HorizontalAlignment="Center">Side 4</TextBlock>
</StackPanel>
</Button.Content>
</Button>
<Button Grid.Column="0" Grid.Row="1" Click="RotateLeft_Click">
<Button.Content>
<StackPanel>
<TextBlock HorizontalAlignment="Center">Rotate Left</TextBlock>
<TextBlock HorizontalAlignment="Center">To</TextBlock>
<TextBlock HorizontalAlignment="Center">Side 2</TextBlock>
</StackPanel>
</Button.Content>
</Button>
<TextBlock HorizontalAlignment="Center"
VerticalAlignment="Center"
Grid.Column="1"
Grid.Row="1"
Text="Side 6">
</TextBlock>
</Grid>
</Border>
Here is the C# code that I'm using, maybe you can see what I am doing wrong?
public static void panelMain(string strPassGridName, System.Windows.Media.Color mcPassColor,
int intRowProperty, int intColumnProperty, Visibility vVisibility,
string[] strButtonTitles, Grid passLayoutRoot, Canvas passCanvas)
{
Grid panelGrid = new Grid();
panelGrid.Name = strPassGridName;
panelGrid.Background = new SolidColorBrush(mcPassColor);
panelGrid.SetValue(Grid.RowProperty, intRowProperty);
panelGrid.SetValue(Grid.ColumnProperty, intColumnProperty);
panelGrid.Visibility = vVisibility;
RowDefinition row1 = new RowDefinition();
row1.Height = new GridLength(100, GridUnitType.Auto);
panelGrid.RowDefinitions.Add(row1);
ColumnDefinition column1 = new ColumnDefinition();
column1.Width = new GridLength(100);
panelGrid.ColumnDefinitions.Add(column1);
passLayoutRoot.Children.Add(panelGrid);
}

I figured it out, I needed to create the border first then add the grid to the border.
One major difference is that I could not reference the border object directly, I needed to "find it"
Border findBorder = passLayoutRoot.FindName("bd" + strPassGridName) as Border;
if (findBorder == null)
{ }
else
{
findBorder.Child = panelGrid;
}
This worked perfectly....
Thanks to all that attempted to help

You can do it as below,
Border gridBorder = new Border();
gridBorder.BorderBrush = new SolidColorBrush(Colors.Black);
gridBorder.BorderThickness = new Thickness(4);
gridBorder.Child = new Grid(); //Your grid here
LayoutRoot.Children.Add(border); // ParentGrid(layout) holding the border

WPF resizing, * vs Auto

I have a XAML with 2 columns in a Grid and I have a button that when I click it, in the code behind, I set the visibility to collapse, and want to resize the other half of the screen to try to take up the whole screen. The collapsing part works, and the RHS then shifts over to the LHS, but it does not take up the entire screen. I tried using both the Auto and Star to resize in HidePlots, but it never takes the full screen. I thought if I collapsed the LHS, and set the column to * for the RHS, it would take up the whole screen. Any thoughts? Thanks.
Here's some code to make it more clear:
<Grid Grid.Row="1" x:Name="ExpandableGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="1.5*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid Grid.Column="0" x:Name="TableGrid">
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<GroupBox Grid.Row="0" Grid.Column="0" x:Name="SampleViewGroupBox" Header="SampleView" HorizontalAlignment="Stretch" FontFamily="Arial" FontSize="12" Margin="5,0,5,0" >
<ContentControl Content="{Binding LayoutManager.SampleView}" Height="Auto" Width="Auto"/>
</GroupBox>
<Button x:Name="TableButton" HorizontalAlignment="Right" Content="Button" Width="15" Height="15" VerticalAlignment="Top" Margin="0,0,-2,0" Click="MaxButton_Click" Grid.Column="0" Grid.Row="0"/>
</Grid>
<Grid Grid.Column="1" x:Name="BaseViewGrid">
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<GroupBox Grid.RowSpan="2" Grid.Column="1" Name="BaseViewGroupBox" Header="PLOTS" Margin="5,0,5,0" >
<ContentControl Content="{Binding LayoutManager.ConsensusView}" Height="Auto" Width="Auto" />
</GroupBox>
</Grid>
</Grid>
private void MaxButton_Click(object sender, RoutedEventArgs e)
{
UIElement senderElement = (UIElement)sender;
if (_tableMinimized)
{
HideTables(false);
_tableMinimized = false;
((Button)senderElement).Style = (Style)FindResource("DashboardDetailsButton");
}
else
{
HideTables(true);
_tableMinimized = true;
((Button)senderElement).Style = (Style)FindResource("DashboardDetailsButtonReverse");
}
}
private void HideTables(bool hide)
{
if (hide)
{
foreach (UIElement child in TableGrid.Children)
child.Visibility = Visibility.Collapsed;
for (int i = 0; i < ExpandableGrid.ColumnDefinitions.Count; i++)
ExpandableGrid.ColumnDefinitions[i].Width = GridLength.Auto;
ExpandableGrid.ColumnDefinitions[1].MinWidth = 500;
for (int i = 0; i < ExpandableGrid.RowDefinitions.Count; i++)
ExpandableGrid.RowDefinitions[i].Height = GridLength.Auto;
TableButton.Visibility = Visibility.Visible;
}
else
{
foreach (UIElement child in TableGrid.Children)
child.Visibility = Visibility.Visible;
for (int i = 0; i < ExpandableGrid.ColumnDefinitions.Count; i++)
ExpandableGrid.ColumnDefinitions[i].Width = new GridLength(1, GridUnitType.Star);
for (int i = 0; i < ExpandableGrid.RowDefinitions.Count; i++)
ExpandableGrid.RowDefinitions[i].Height = new GridLength(1, GridUnitType.Star);
}
}
Edit: I tried to also change one line to:
ExpandableGrid.ColumnDefinitions[1].MinWidth = System.Windows.SystemParameters.PrimaryScreenWidth-20;
instead of the hard-coded 500 value, it looks correct. However, if I try to click the button again to revert back to normal, the RHS takes up the bulk of the screen without getting back to its original position.

Your current column definition says to make Column B equal to 1.5 times the size of Column A, so even if ColumnB's content is hidden, the column will still take up 3/5 of the screen.
Change it so the column that collapses has a Width="Auto", and set it's Content's Width equal to whatever size it should be when it's expanded. If you want to keep the 1.5* default width, I'd recommend using something like a MathConverter to figure out what size it should be based on the parent Grid's width. I have the code for one posted here
<Grid x:Name="ParentGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="Auto"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid x:Name="RHS" Grid.Column="0" />
<!-- Collapse this Grid -->
<Grid x:Name="LHS" Grid.Column="1"
Width="{Binding ElementName=ParentGrid, Path=ActualWidth,
Converter={StaticResource MathConverter},
ConverterParameter=((#VALUE/5)*3)}" />
</Grid>

You need to set column 0 to be whatever you desire (Auto, 150, etc...) and set column 1 to be *.
It looks like your Grid is also within a Grid, so the parent's behavior also has to be taken into account.

Programmatically Create Grid with Custom Element

I'm trying to create a grid programmatically and appending a custom control as a child to the grid as row 0 column 0 out of a 2x2 matrix. To make matters more tricky, I'm using the MVVM design pattern. Heres some code to help everyone get the idea:
App.xaml.cs
base.OnStartup(e);
var viewModel = new MainWindowViewModel();
var mainWindow = new MainWindow();
mainWindow.GridWindows = viewModel.Window.GridWindows;
MainWindowViewModel - method returns the GridWindows.
private Grid CreateGrid()
{
Grid grid = new Grid();
// Create column definitions.
ColumnDefinition columnDefinition1 = new ColumnDefinition();
ColumnDefinition columnDefinition2 = new ColumnDefinition();
columnDefinition1.Width = new GridLength(640);
columnDefinition2.Width = new GridLength(640);
// Create row definitions.
RowDefinition rowDefinition1 = new RowDefinition();
RowDefinition rowDefinition2 = new RowDefinition();
rowDefinition1.Height = new GridLength(340);
rowDefinition2.Height = new GridLength(340);
// Attached definitions to grid.
grid.ColumnDefinitions.Add(columnDefinition1);
grid.ColumnDefinitions.Add(columnDefinition2);
grid.RowDefinitions.Add(rowDefinition1);
grid.RowDefinitions.Add(rowDefinition2);
// Create preview window.
Border border = new Border();
border.BorderThickness = new Thickness(20);
border.Padding = new Thickness(8);
border.SetResourceReference(Control.BackgroundProperty, "PreviewWindow");
MediaRTSPElement previewElement = new MediaRTSPElement();
previewElement.Name = "RTSPStreamPlayer";
previewElement.Stretch = Stretch.UniformToFill;
previewElement.Source = "rtsp://192.100.100.22/media/video1";
previewElement.VideoRenderer = VideoRendererType.EnhancedVideoRenderer;
previewElement.LoadedBehavior = WPFEVR.DirectShow.Players.MediaState.Play;
previewElement.SpeedRatio = 0.5;
//border.Child = previewElement;
// Add preview window.
for (int i = 0; i < 4; i++)
{
grid.Children.Add(previewElement as UIElement);
Grid.SetColumn(previewElement, i);
Grid.SetRow(previewElement, i);
break;
}
return grid;
}
And the XAML Markup that the grid should assign to
<Grid x:Name="GridWindows"></Grid>
The problem is my custom control does not appear in the grid layout, heres the xaml code that does it without code-behind, and this does work:
<Grid x:Name="GridWindows">
<!--<Grid.ColumnDefinitions>
<ColumnDefinition Width="640" />
<ColumnDefinition Width="640" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="340" />
<RowDefinition Height="340" />
</Grid.RowDefinitions>
<Border BorderThickness="20" Padding="8" Background="{DynamicResource ResourceKey=PreviewWindow}" Grid.Row="0" Grid.Column="0">
<evr:MediaRTSPElement x:Name="RTSPStreamPlayer"
Stretch="UniformToFill"
VideoRenderer="EnhancedVideoRenderer"
LoadedBehavior="Play"
Source="rtsp://192.100.100.22/media/video1"
SpeedRatio="0.5" />
</Border>
<Border BorderThickness="20" Padding="8" Background="{DynamicResource ResourceKey=PreviewWindow}" Grid.Row="0" Grid.Column="1">
<evr:MediaRTSPElement x:Name="RTSPStreamPlayer2"
Stretch="UniformToFill"
VideoRenderer="EnhancedVideoRenderer"
LoadedBehavior="Play"
Source="rtsp://192.100.100.78/media/video1"
SpeedRatio="0.5" />
</Border>
<Border BorderThickness="20" Padding="8" Background="{DynamicResource ResourceKey=PreviewWindow}" Grid.Row="1" Grid.Column="0">
<evr:MediaRTSPElement x:Name="RTSPStreamPlayer3"
Stretch="UniformToFill"
VideoRenderer="EnhancedVideoRenderer"
LoadedBehavior="Play"
Source="rtsp://192.100.100.78/media/video1"
SpeedRatio="0.5" />
</Border>
<Border BorderThickness="20" Padding="8" Background="{DynamicResource ResourceKey=PreviewWindow}" Grid.Row="1" Grid.Column="1">
<evr:MediaRTSPElement x:Name="RTSPStreamPlayer4"
Stretch="UniformToFill"
VideoRenderer="EnhancedVideoRenderer"
LoadedBehavior="Play"
Source="rtsp://192.100.100.22/media/video1"
SpeedRatio="0.5" />
</Border>-->
</Grid>
Any ideas as to why programmatic code isn't working?

if you're creating Grid in the xaml you can't later set it in code. Grid (instance) is already in visualtree. Overwriting variable won't do any effect. You should set your Grid as content of xaml defined control. I'm guessing that your code looks like this:
Code:
this.GridWindows = createdGrid;
Xaml:
<Grid x:Name="GridWindows"></Grid>
In code you should have something like this:
this.GridWindows.Children.Add(createdGrid);