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Html tags in selected value

4 Answers 181 Views

MultiColumn ComboBox

This is a migrated thread and some comments may be shown as answers.

4 Answers, 1 is accepted

answered on 08 Sep 2011, 09:04 AM

Hello Nermond,

The SelectedValue property contains the value represented by the DisplayMember property. That is why its value contains HTML tags. You can strip all HTML tags by using the following code:

string strResult = Regex.Replace(strInput,@"<(.|\n)*?>",string.Empty);

The HTML-like formatting is a feature integrated in our Telerik Presentation Framework. However, RadMultiColumnComboBox uses the default WinForms TextBox to allow editing. It cannot present rich text and HTML tags should be striped. You can do this by handling the TextChanged event. Please consider the code snippet below:

radMultiColumnComboBox1.MultiColumnComboBoxElement.TextBoxElement.TextBoxItem.HostedControl.TextChanged += new EventHandler(HostedControl_TextChanged);

void HostedControl_TextChanged(object sender, EventArgs e)

{

TextBox textbox = (TextBox)sender;

textbox.Text = Regex.Replace(textbox.Text, @"<(.|\n)*?>",string.Empty);;

}

I hope this helps. If you need further assistance, please do not hesitate to ask.

All the best,
Peter
the Telerik team

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answered on 08 Sep 2011, 03:39 PM

Hi Nermond,

You cannot show an HTML formatted text in the TextBox. However, there is a work around which covers the case when you do not need to edit the text. You can hide the RadTextBox which is inside RadMultiColumnComboBox and put there a LightVisualElement that supports HTML-like formatting. Please consider the code snippet below:

LightVisualElement lve = new LightVisualElement();

private void Form_Load(object sender, EventArgs e)

{                                                  radMultiColumnComboBox1.MultiColumnComboBoxElement.TextBoxElement.TextBoxItem.HostedControl.TextChanged +=

new EventHandler(HostedControl_TextChanged);

lve.TextAlignment = ContentAlignment.MiddleLeft;

lve.Alignment = ContentAlignment.MiddleLeft;

lve.MaxSize = new Size(radMultiColumnComboBox1.Size.Width - 15, radMultiColumnComboBox1.Size.Height);

radMultiColumnComboBox1.MultiColumnComboBoxElement.TextBoxElement.Visibility = ElementVisibility.Hidden;

radMultiColumnComboBox1.MultiColumnComboBoxElement.Children.Add(lve);

}

private void HostedControl_TextChanged(object sender, EventArgs e)

{

TextBox textbox = (TextBox)sender;

lve.Text = textbox.Text;

}

Do not hesitate to contact us if you have other questions.

Regards,
Peter
the Telerik team