Solved

Control text

Posted on 2010-09-21
12
362 Views
Last Modified: 2012-05-10
I am writing a windows application with .net framework 2.0

I want to know how to display control text like in webapps
0
Comment
Question by:GRChandrashekar
  • 3
  • 3
  • 2
  • +3
12 Comments
 
LVL 2

Expert Comment

by:vsosu
ID: 33725312
Can you give more info? what you are expecting?
0
 
LVL 53

Expert Comment

by:Dhaest
ID: 33725335
Do you want to show text on your form ? use a textbox, label, ...
0
 

Author Comment

by:GRChandrashekar
ID: 33725474
No. I want to display within textbox like "Please enter your name". which is actually background text
0
Problems using Powershell and Active Directory?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

 
LVL 53

Expert Comment

by:Dhaest
ID: 33725602
I don't understand i completely....

Do you mean that you want the text "please enter your name" in a textbox. When the user enter's this textbox, this text must be removed ?



0
 
LVL 53

Expert Comment

by:Dhaest
ID: 33725667
Add leave and enter-event
        private void Form1_Load(object sender, EventArgs e)
        {
            textBox1.Text = "Please enter your name";
            textBox1.ForeColor = System.Drawing.SystemColors.InactiveCaptionText;
        }

        private void textBox1_Enter(object sender, EventArgs e)
        {
            if (textBox1.ForeColor != System.Drawing.SystemColors.WindowText)
            {
                textBox1.Text = "";
                textBox1.ForeColor = System.Drawing.SystemColors.WindowText;
            }
        }

        private void textBox1_Leave(object sender, EventArgs e)
        {
            if (textBox1.Text == "")
            {
                textBox1.Text = "Please enter your name";
                textBox1.ForeColor = System.Drawing.SystemColors.InactiveCaptionText;
            }
        }

Open in new window

0
 

Author Comment

by:GRChandrashekar
ID: 33726205
Yes somewhat like this. but tedious to write for every text box may be some sort of public function would help
0
 
LVL 65

Expert Comment

by:rockiroads
ID: 33726440
Why dont you put the default text on your webpage code?

<asp:TextBox ID="TextBox1" runat="server" Text="Please Enter Username"></asp:TextBox>

If you want the text cleared then add some javascript on the OnClick event.

<asp:TextBox ID="TextBox1" runat="server" Text="Please Enter Username" OnClick="ClearAll('TextBox1');"></asp:TextBox>

So create a javscript function called ClearAll in your asp webpage code
0
 
LVL 8

Expert Comment

by:Gururaj Badam
ID: 33732012
>> Yes somewhat like this. but tedious to write for every text box may be some sort of public function would help <<

Write a class which extends TextBox and put the above suggested code in that class. Instead of textbox1, use this reference in that class. Now use the new TextBox wherever you need it. - OOP Inheritance concept ;)
0
 

Author Comment

by:GRChandrashekar
ID: 33732144
It is windows app not web
0
 
LVL 16

Expert Comment

by:kris_per
ID: 33733614

Here is a public common class that can be used from any form.

In constructor of the form having the textbox, call the method like:

TextBoxMessageHandler.AddMessage(textBoxName, "Please enter your name");

TextBoxMessageHandler.AddMessage(textBoxAddress, "Please enter your address");




public Form1()
        {
            InitializeComponent();

            TextBoxMessageHandler.AddMessage(textBox1, "Please enter your name");
        }

//////////////////////////////
TextBoxMessageHandler.cs

using System;
using System.Windows.Forms;

namespace WindowsFormsApplication4
{
    public class TextBoxMessageHandler
    {
        private string _messageText;

        public static void AddMessage(TextBox textBox, string messageText)
        {
            textBox.Text = messageText;
            textBox.ForeColor = System.Drawing.Color.Gray;

            TextBoxMessageHandler handler = new TextBoxMessageHandler();
            handler._messageText = messageText;

            textBox.Leave += new System.EventHandler(handler.TextBox_Leave);
            textBox.Enter += new System.EventHandler(handler.TextBox_Enter);
        }

        private void TextBox_Enter(object sender, EventArgs e)
        {
            TextBox textBox = sender as TextBox;
            if (textBox != null)
            {
                if (textBox.ForeColor != System.Drawing.SystemColors.WindowText)
                {
                    textBox.Text = "";
                    textBox.ForeColor = System.Drawing.SystemColors.WindowText;
                }
            }
        }

        private void TextBox_Leave(object sender, EventArgs e)
        {
            TextBox textBox = sender as TextBox;
            if (textBox != null)
            {
                if (textBox.Text == "")
                {
                    textBox.Text = _messageText;
                    textBox.ForeColor = System.Drawing.Color.Gray;
                }
            }
        }
    }    
}

Open in new window

0
 
LVL 16

Accepted Solution

by:
kris_per earned 500 total points
ID: 33733641

Another way is:

Extend TextBox class into a new class say TextBoxM and include the required event handlers in the derived class.

Then in Form designer, instead of adding TextBox from Toolbox, add TextBoxM control and set its MessageText property to like "Please enter your name"
using System;
using System.Windows.Forms;

namespace WindowsFormsApplication4
{
    public class TextBoxM : TextBox
    {
        private string _messageText = "Please enter value";

        public string MessageText
        {
            get { return _messageText; }
            set 
            { 
                _messageText = value;
                Text = _messageText;
            }
        }

        public TextBoxM()
        {
            Text = _messageText;
            ForeColor = System.Drawing.Color.Gray;

            this.Leave += new System.EventHandler(this.TextBoxM_Leave);
            this.Enter += new System.EventHandler(this.TextBoxM_Enter);
        }

        private void TextBoxM_Enter(object sender, EventArgs e)
        {
            if (ForeColor != System.Drawing.SystemColors.WindowText)
            {
                Text = "";
                ForeColor = System.Drawing.SystemColors.WindowText;
            }
        }

        private void TextBoxM_Leave(object sender, EventArgs e)
        {
            if (Text == "")
            {
                Text = _messageText;
                ForeColor = System.Drawing.Color.Gray;
            }
        }
    }
}

Open in new window

0
 
LVL 65

Expert Comment

by:rockiroads
ID: 33736458
Ok, so what is wrong with just changing the text property in design view?

in design view, click your textbox, look at right hand side for a properties window. if one not there right click on textbox and select properties.

then find the Text property and assign it your default text you want displayed

0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction Although it is an old technology, serial ports are still being used by many hardware manufacturers. If you develop applications in C#, Microsoft .NET framework has SerialPort class to communicate with the serial ports.  I needed to…
We all know that functional code is the leg that any good program stands on when it comes right down to it, however, if your program lacks a good user interface your product may not have the appeal needed to keep your customers happy. This issue can…
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question