How to use textbox control created in XAML and use it in C# code?

Question

I have this code to show/hide Canvas with some text boxes, and when I press a button it submits data from TextBox1 to database. The problem is that I don't know how to access TextBox1 in C# code behind.

For example this is some of my XAML code:

<ContentControl  Background="{x:Null}" >
  <ContentControl.Template>
     <ControlTemplate>
      <StackPanel Grid.Row="3" Height="500" Name="stack1" Width="280">
        <Canvas x:Name="canvas1"  Height="400" >
              <TextBox Height="23" Name="TextBox1"  Width="70" />

    <Button Content="Submit" Name="submit_button" Click="submit_button_Click" />
        </Canvas>

  <ToggleButton x:Name="toggleshowhide" Content="Show/Hide" IsChecked="True" Height="50" />
      </StackPanel>
     <ControlTemplate.Triggers>
      <Trigger SourceName="toggleshowhide" Property="IsChecked" Value="True">
        <Setter TargetName="canvas1" Property="Visibility" Value="Visible" />
          </Trigger>
      <Trigger SourceName="toggleshowhide" Property="IsChecked" Value="False">
        <Setter TargetName="canvas1" Property="Visibility" Value="Hidden" />
          </Trigger>
    </ControlTemplate.Triggers>
      </ControlTemplate>
  </ContentControl.Template>
     <Button Content="Button" Height="23" Name="submit" Width="74" />
</ContentControl>

And this is what I'm trying to achieve:

private void submit_button_Click(object sender, RoutedEventArgs e)
{
      OleDbCommand cmd = new OleDbCommand("INSERT INTO Table VALUES (this.TextBox1.Text), con); 

      cmd.Connection = con;

         int temp = cmd.ExecuteNonQuery();

        if (temp > 0)
        {
            MessageBox.Show("OK", "Info !");
        }
        else
        {
            MessageBox.Show("Some text !", "Error");
        }

If anyone can help I`ll really appreciate it. :)

xmlns="schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="schemas.microsoft.com/expression/blend/2008" — user1742537
– user1742537, Commented Oct 13, 2012 at 0:55

Metro Smurf · Accepted Answer · 2012-10-13 01:07:46Z

1

When accessing elements generated from a ControlTemplate, you need to use the FindName method of the Template. In this case, give your ContnetControl a name:

<ContentControl  Background="{x:Null}" x:Name="MyContentControl">

And in the code behind, you can access the value of any of the generated elements by name using the FindName method:

TextBox tb = (TextBox)MyContentControl.Template.FindName( "TextBox1", MyContentControl);

For more information, see: How to: Find ControlTemplate-Generated Elements

answered Oct 13, 2012 at 1:07

Metro Smurf

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Comments

Z . · Accepted Answer · 2012-10-13 00:00:46Z

0

string v = this.TextBox1.Text;
OleDbCommand cmd = new OleDbCommand('INSERT INTO Table VALUES (' + v + ');');

BTW this is pretty bad idea, read about sql injection...

answered Oct 13, 2012 at 0:00

Z .

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12 Comments

user1742537 Over a year ago

I cannot use TextBox1.Text, it doesn`t recognize it, like its not there

user1742537 Over a year ago

Here is the picture of my app, hope it shows you what i want to achieve: fsrmo.comule.com/uploads/samplepicture.jpg

user1742537 Over a year ago

whole code or just this part,beause there is a lot of xaml code there :) ?

Z . Over a year ago

just the relevant part from the xaml and c#... just couple of lines of each

user1742537 Over a year ago

|

eran otzap · Accepted Answer · 2012-10-13 00:11:37Z

0

give your TextBox an x:Name not a Name ... does that even Compile ?

xaml :

<TextBox x:Name="TextBox1" />

cs :

var s = TextBox1.Text;

answered Oct 13, 2012 at 0:11

eran otzap

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1 Comment

Metro Smurf Over a year ago

x:Name is essentially the same thing as Name in XAML. More info: stackoverflow.com/q/589874/9664

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