Textbox and Texbox Cotrol getting Number of Lines in Multiline Textbox/textbox control

[Roger]

If I use a regular MS Text box I can use textbox.lines.count()  but this is invalid when using either of the Telerik textbox controls.

Is there a way to get the Number of Lines of a Textbox or TextboxControl?

Sample Code used with MS TextBox control

var lines = txtEQCodes.Lines.Count();
                lines -= String.IsNullOrWhiteSpace(txtEQCodes.Lines.Last()) ? 1 : 0;

This code does not work with Telerik textbox Controls.

I get compile errors on the Lines.Count() and Lines.Last() properties.

I am using telerik winforms.ui version 2021.2.615.40

Thanks,

 

Roger

[Arun]

HI, 

If you just wanted to get the number of lines in a multi line textbox, please try

 int _Lines = radTxtRemarks.Lines.Count;

It's working for me.

[Roger]

Count is not an option for me, as it is a compile error on my RadTextBox (Version 2021.2.615.40) This is a Winform application running in .Net Framework 4.6.1

[Arun]

I am using VB.Net (VS2017) & RadTextBox (Version: 2017.3.1017.40), It's working for me.

[Nadya | Tech Support Engineer]

Hello, Roger,

I have tested the RadTextBox.Lines.Count() and RadTextBox.Lines.Last() methods with the latest Telerik version and they both are working as expected on my side. I also added a standard MS TextBox to compare the results to RadTextBox and would like to note that they behave the same way. Please refer to the following code snippet. I have also attached my test project so you can give it a try.

 public RadForm1()
 {
     InitializeComponent();
     this.radTextBox1.Text = "Hello" + "\r\n" + "I am RadTextBox" + "\r\n" + "Multiline = true";
     this.textBox1.Text = "Hello" + "\r\n" + "I am MS TextBox" + "\r\n" + "Multiline = true";
 }

 private void radButton1_Click(object sender, EventArgs e)
 {
     var count = this.radTextBox1.Lines.Count();
     var count2 = this.textBox1.Lines.Count();

     //TextBox
     var lines = textBox1.Lines.Count();
     lines -= String.IsNullOrWhiteSpace(textBox1.Lines.Last()) ? 1 : 0;

     //RadTextBox
     var radlines = radTextBox1.Lines.Count();
     radlines -= String.IsNullOrWhiteSpace(radTextBox1.Lines.Last()) ? 1 : 0;
 }

@Arun,  Thank you for your suggestions.

I hope this helps. Should you have further questions do not hesitate to ask.

Regards,
Nadya
Progress Telerik