c# escape characters cause [] in listview

Question

serkan sendur 821 Postaholic

14 Years Ago

the following escape sequences cause [] in listview. Is there any way to fix it?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace newLineInListView
{
	public partial class Form1 : Form
	{
		public Form1()
		{
			InitializeComponent();
		}

		private void Form1_Load(object sender, EventArgs e)
		{
			StringBuilder sb = new StringBuilder();
			sb.Append("\r");
			sb.Append("1");
			sb.Append("\n");
			sb.Append("2");
			sb.Append("\a");
			sb.Append("3");
			sb.Append("\b");
			sb.Append("4");
			sb.Append("\f");
			sb.Append("5");
			sb.Append("\t");
			sb.Append("6");
			sb.Append("\v");
			sb.Append("7");
			ListViewItem lvi = new ListViewItem(sb.ToString());
			listView1.Items.Add(lvi);
		}
	}
}

Form1.Designer.cs :

namespace newLineInListView
{
	partial class Form1
	{
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.IContainer components = null;

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
		protected override void Dispose(bool disposing)
		{
			if (disposing && (components != null))
			{
				components.Dispose();
			}
			base.Dispose(disposing);
		}

		#region Windows Form Designer generated code

		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.listView1 = new System.Windows.Forms.ListView();
			this.columnHeader1 = new System.Windows.Forms.ColumnHeader();
			this.SuspendLayout();
			// 
			// listView1
			// 
			this.listView1.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
            this.columnHeader1});
			this.listView1.Location = new System.Drawing.Point(71, 25);
			this.listView1.Name = "listView1";
			this.listView1.Size = new System.Drawing.Size(250, 145);
			this.listView1.TabIndex = 0;
			this.listView1.UseCompatibleStateImageBehavior = false;
			this.listView1.View = System.Windows.Forms.View.Details;
			// 
			// Form1
			// 
			this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
			this.ClientSize = new System.Drawing.Size(409, 289);
			this.Controls.Add(this.listView1);
			this.Name = "Form1";
			this.Text = "Form1";
			this.Load += new System.EventHandler(this.Form1_Load);
			this.ResumeLayout(false);

		}

		#endregion

		private System.Windows.Forms.ListView listView1;
		private System.Windows.Forms.ColumnHeader columnHeader1;
	}
}

Project is attached.

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newLineInListView.zip (31.39 KB)

5 Contributors
18 Replies
380 Views
1 Day Discussion Span
Latest Post 14 Years Ago Latest Post by kvprajapati

kvprajapati commented: Good question but I think you have an answer. +17

All 18 Replies

papanyquiL 45 Junior Poster

14 Years Ago

Hmm, I'm not getting "[]," I'm getting "{
12345 67}"

ddanbe 2,724 Professional Procrastinator

14 Years Ago

Getting te same.
But why does someone wants to display \a in a ListVIEW?
\a is the alert or bell character, I believe it is ASCII 7 so it is below ASCII 32(the space) and is as such non printable. Same as opening excel.exe in Word. Looks like rubbish because of the non printables.

kvprajapati commented: Because - "Serkan wants to store esc seq. chars" +17

papanyquiL 45 Junior Poster

14 Years Ago

I'm not even sure you can use some of those escape sequences in a listView, such as \n, can you? I don't think listview sorts things like textboxes, richtextboxes, etc... It's sorts by rows or columns so I don't even think a line return would work; or am I completely off on that?

DdoubleD 315 Posting Shark

14 Years Ago

I had the same concerns you guys did about what was being done in his ListView--it seems like a futile exercise to me.

papanyquiL 45 Junior Poster

14 Years Ago

Since the listview doesn't accept some of the linefeed commands, etc.., it shows the command as a special character. I'm guessing some of the characters differ in ALT codes between XP and Vista. Thus, the special character being displayed in Vista (or win7 in my case) would be read and displayed as a "[, ]" in XP.

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serkan sendur 821 Postaholic Banned · Answer 1 · 2009-09-21T23:13:34+00:00

it does not cause [] in vista, but causes in XP.
could you verify?

DdoubleD 315 Posting Shark · Answer 2 · 2009-09-22T00:01:40+00:00

Why does your data contain such escape sequences and why not scrub them out first before adding them if you need to display in a ListView control?

serkan sendur 821 Postaholic Banned · Answer 3 · 2009-09-22T00:07:13+00:00

they are some seperators showing some hierarchical relation between strings. i can not remove them. but anyway i think this is a known issue, i am not alone and i am going to mark this thread as solved by contributing to y'all's solved threads.

serkan sendur 821 Postaholic Banned · Answer 4 · 2009-09-22T00:08:12+00:00

By the way i have a question for native english speakers : which one is correct
1) change its name as to be blah blah
2) change its name to be as blah blah

?

DdoubleD 315 Posting Shark · Answer 5 · 2009-09-22T00:09:47+00:00

By the way i have a question for native english speakers : which one is correct
1) change its name as to be blah blah
2) change its name to be as blah blah
?

Neither: "change its name to be "blah blah"

papanyquiL 45 Junior Poster · Answer 6 · 2009-09-22T00:12:46+00:00

By the way i have a question for native english speakers : which one is correct
1) change its name as to be blah blah
2) change its name to be as blah blah
?

Neither, it's 'change its name to blahblah.'

DdoubleD 315 Posting Shark · Answer 7 · 2009-09-22T00:13:34+00:00

DdoubleD 315 Posting Shark

14 Years Ago

Or, Change its name to: blah blah

serkan sendur 821 Postaholic Banned · Answer 8 · 2009-09-22T00:28:03+00:00

Come on guys, sometimes you want to make a sentence sound more dramatic or drastic. if you were to put as somewhere there, how would you insert it? I want that to sound more important than a simple name change.

papanyquiL 45 Junior Poster · Answer 9 · 2009-09-22T00:37:09+00:00

Then say this:

"Change its name to <name>." Simple yet effective. :)

kvprajapati 1,826 Posting Genius Team Colleague · Answer 10 · 2009-09-22T14:34:17+00:00

OwnerDraw listview; It expands escape seq,. chars.

....
listView1.OwnerDraw = true;
listView1.DrawItem += new DrawListViewItemEventHandler(listView1_DrawItem);
}

void listView1_DrawItem(object sender, DrawListViewItemEventArgs e)
 {
 e.DrawText(TextFormatFlags.Default | TextFormatFlags.ExpandTabs | TextFormatFlags.ExternalLeading );
  }

serkan sendur 821 Postaholic Banned · Answer 11 · 2009-09-22T18:22:14+00:00

OwnerDraw listview; It expands escape seq,. chars.

....
listView1.OwnerDraw = true;
listView1.DrawItem += new DrawListViewItemEventHandler(listView1_DrawItem);
}

void listView1_DrawItem(object sender, DrawListViewItemEventArgs e)
 {
 e.DrawText(TextFormatFlags.Default | TextFormatFlags.ExpandTabs | TextFormatFlags.ExternalLeading );
  }

Thanks a lot, this is incredible, i havent tried yet but it is very exciting , this is out of the box thinking...

serkan sendur 821 Postaholic Banned · Answer 12 · 2009-09-22T20:08:12+00:00

it doesnt seem to work
Form1.cs :

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace newLineInListView
{
	public partial class Form1 : Form
	{
		public Form1()
		{
			InitializeComponent();
		}

		private void Form1_Load(object sender, EventArgs e)
		{
			StringBuilder sb = new StringBuilder();
			sb.Append("\r");
			sb.Append("1");
			sb.Append("\n");
			sb.Append("2");
			sb.Append("\a");
			sb.Append("3");
			sb.Append("\b");
			sb.Append("4");
			sb.Append("\f");
			sb.Append("5");
			sb.Append("\t");
			sb.Append("6");
			sb.Append("\v");
			sb.Append("7");
			ListViewItem lvi = new ListViewItem(sb.ToString());
			listView1.Items.Add(lvi);
		}

		private void listView1_DrawItem(object sender, DrawListViewItemEventArgs e)
		{
			e.DrawText(TextFormatFlags.Default | TextFormatFlags.ExpandTabs | TextFormatFlags.ExternalLeading);
		}
	}
}

kvprajapati 1,826 Posting Genius Team Colleague · Answer 13 · 2009-09-22T20:25:51+00:00

You are right serkan. It expands newline, carriage return and tab char only.

c# escape characters cause [] in listview

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