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C# Find and Relate to Runtime Textbox

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Join Date: May 2009

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C# Find and Relate to Runtime Textbox

Jul 18th, 2009

Hi. I'm new to c# and have ran into a problem, I am using the following code to generate textboxes within a panel.

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
private void button1_Click(object sender, EventArgs e)
        {
            AddFields();
        }
 
        private void AddFields()
        {
            if (textBoxIndex != 10)
            {
                TextBox field = new TextBox();
                field.Name = "field" + textBoxIndex.ToString();
                textBoxIndex++;
                field.Size = new Size(200, 20);
                panel1.Controls.Add(field);
            }
            else
            {
                MessageBox.Show("A Maximum of 10 Areas is Supported");
            }
private void button1_Click(object sender, EventArgs e)
        {
            AddFields();
        }

        private void AddFields()
        {
            if (textBoxIndex != 10)
            {
                TextBox field = new TextBox();
                field.Name = "field" + textBoxIndex.ToString();
                textBoxIndex++;
                field.Size = new Size(200, 20);
                panel1.Controls.Add(field);
            }
            else
            {
                MessageBox.Show("A Maximum of 10 Areas is Supported");
            }

This also caps the textboxes to a maximum of 10, this code works fine for me it is the next bit that I am stuck on. I need to store values entered into each one of the textbox into diffrent variables which I can't do correctly, I am using the following code to find the textbox control.

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
                   if (textBoxIndex != 1)
               {
 
               }
               else
               {
                   Control[] ctrls = Controls.Find("field1", false);
                   for (int i = 0; i < ctrls.Length; i++)
                   {
                       TextBox field1 = (TextBox)ctrls[0];
                       field1.Text = Variable1;
                       field1.Text = "";
                   }
 
               }
                   if (textBoxIndex != 1)
               {
                
               }
               else
               {
                   Control[] ctrls = Controls.Find("field1", false);
                   for (int i = 0; i < ctrls.Length; i++)
                   {
                       TextBox field1 = (TextBox)ctrls[0];
                       field1.Text = Variable1;
                       field1.Text = "";
                   }

               }

I think this is were I have gone wrong and I need help please.

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ddanbe

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Re: C# Find and Relate to Runtime Textbox

Jul 18th, 2009

I think you have to look in the Controls collection of panel1, now you are looking in the Controls collection of the form.
So instead of Controls.Find use panel1.Controls.Find

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Re: C# Find and Relate to Runtime Textbox

Jul 18th, 2009

Thanks, it now looks like this.

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
 private void FieldStore()
           {
               if (textBoxIndex != 1)
               {
 
               }
               else
               {
                   Control[] ctrls = panel1.Controls.Find("field1", false);
                   for (int i = 0; i < ctrls.Length; i++)
                   {
                       TextBox field1 = (TextBox)ctrls[0];
                       field1.Text = Area.Room1;
                       field1.Text = "";
                   }
               }
 
           }
 private void FieldStore()
           {
               if (textBoxIndex != 1)
               {
                  
               }
               else
               {
                   Control[] ctrls = panel1.Controls.Find("field1", false);
                   for (int i = 0; i < ctrls.Length; i++)
                   {
                       TextBox field1 = (TextBox)ctrls[0];
                       field1.Text = Area.Room1;
                       field1.Text = "";
                   }
               }
               
           }

do my if statements look ok, I wasn't sure whether to go != or == I think what I've got is wrong because it's still not working with panel1.Controls.Find.

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Re: C# Find and Relate to Runtime Textbox

Jul 18th, 2009

You don't have to define an array of controls here. You have them ready in your panel1 Controls collection.
Perhaps you should use something like this (I have not tested it, I leave that to you)

 Help with Code Tags 
 c# Syntax (Toggle Plain Text) 
string Tboxname = string.Empty();
            for (int i = 0; i < Numberoftextboxes; i++)
            {
                Tboxname = "field" + i.ToString();
                TextBox field1 = panel1.Controls.Find(Tboxname, false);
                field1.Text = Area.Room1;
                field1.Text = "";
            }
string Tboxname = string.Empty();
            for (int i = 0; i < Numberoftextboxes; i++)
            {
                Tboxname = "field" + i.ToString();
                TextBox field1 = panel1.Controls.Find(Tboxname, false);
                field1.Text = Area.Room1;
                field1.Text = "";
            }

Also the last two statements look wierd. You assign a value to Text and then you make Text empty...

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Make love, no war. Cave ab homine unius libri.
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Re: C# Find and Relate to Runtime Textbox

Jul 18th, 2009

No, sorry but whatever i do to that It dosent work, i might add that i'm fairly new to c#...

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Re: C# Find and Relate to Runtime Textbox

Jul 18th, 2009

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
foreach(Control c in Panel1.Controls)
{
if(c is TextBox)
MessageBox.Show(string.Format("TextBox Name: {0} , TextBox Text {1}",c.Name, c.Text));
}
foreach(Control c in Panel1.Controls)
{
if(c is TextBox)
MessageBox.Show(string.Format("TextBox Name: {0} , TextBox Text {1}",c.Name, c.Text));
}

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Re: C# Find and Relate to Runtime Textbox

Jul 18th, 2009

Why make it difficult when it is so easy!
Thanks for the clarification Ramy

Today is a gift, that's why it is called "The Present".
Make love, no war. Cave ab homine unius libri.
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Re: C# Find and Relate to Runtime Textbox

Jul 18th, 2009

You're welcome my friend, Danny
I Hope it solves their problem.

Last edited by Ramy Mahrous; Jul 18th, 2009 at 8:01 am.

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Re: C# Find and Relate to Runtime Textbox

Jul 18th, 2009

Thanks thats brilliant but it dosent solve my original problem, is their a way to get it specific to one textbox only?

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Re: C# Find and Relate to Runtime Textbox

#10

Jul 18th, 2009

If you know anything about it. Its Text or its Name you can add a condition

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
foreach(Control c in Panel1.Controls)
{
if(c is TextBox)
if(c.Name = "field1") //or any property c.Text = "" or c.....
MessageBox.Show(string.Format("TextBox Name: {0} , TextBox Text {1}",c.Name, c.Text));
}
foreach(Control c in Panel1.Controls)
{
if(c is TextBox)
if(c.Name = "field1") //or any property c.Text = "" or c.....
MessageBox.Show(string.Format("TextBox Name: {0} , TextBox Text {1}",c.Name, c.Text));
}