How to pass values between forms

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Hi Guys,
I have one form with a list box in one form and i want to get the value that was selected in list box to be displayed in text box of another form , like we use session in c# and $_POST[] in php ,How can i use that in Access forms using vb?
give me your valuable suggestions

Posted 5-Mar-12 14:36pm

raghucse2010

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raghucse2010 · Answer 1 · 2012-03-05T19:39:00

Hi GanesanSenthilvel,

Its nice to hear this from you GanesanSenthilvel but Since I am using Access and back end I am new to vb back end and so i requested for vb code suggestion , Anyhow I am really thankful for your answer

my answer to this is

1st form:

VB

Private Sub cmdSend_Click()
Dim str As String
str = txtValue.Value
DoCmd.Close
DoCmd.OpenForm "frmTwo", acNormal, , , , acWindowNormal, "Value=" + str
End Sub

2nd form

VB

Private Sub Form_Load()
lblPassedValue.Caption = GetTagFromArg(Me.OpenArgs, "Value")
End Sub

Ganesan Senthilvel · Answer 2 · 2012-03-05T14:55:00

You can pass values between forms in 4 ways. Considering, first form 'Form1' has button1, textBox1. Second form 'Form2' has label named 'label1'. As the first solution, let us use constructor

C#

public Form2(string strTextBox)
{
  InitializeComponent();
  label1.Text=strTextBox;
}

private void button1_Click(object sender, System.EventArgs e)
{
    Form2 frm=new Form2(textBox1.Text);
    frm.Show();
}

Ganesan Senthilvel · Answer 3 · 2012-03-05T14:57:00

Solution 2

Second, using properties approach:

C#

public string _textBox1
{
    get{return textBox1.Text;}
}
public string _textBox
{
   set{label1.Text=value;}
}
private void button1_Click(object sender, System.EventArgs e)
{
     Form2 frm=new Form2();
     frm._textBox=_textBox1;
     frm.Show();
}

Posted 5-Mar-12 14:57pm

Ganesan Senthilvel

Ganesan Senthilvel · Answer 4 · 2012-03-05T15:00:00

Third, using objects approach

SQL

public class Form1 : System.Windows.Forms.Form
{
 public System.Windows.Forms.TextBox textBox1;

private void button1_Click(object sender, System.EventArgs e)
{
    Form2 frm= new Form2();
    frm.frm1=this;
    frm.Show();
}

public class Form2 : System.Windows.Forms.Form
{
     private System.Windows.Forms.Label label1;
     public Form1 frm1;

private void Form2_Load(object sender, System.EventArgs e)
{
    label1.Text=((Form1)frm1).textBox1.Text;
}

Ganesan Senthilvel · Answer 5 · 2012-03-05T15:04:00

Fourth, using delegate

C#

public delegate void delPassData(TextBox text);

private void button1_Click(object sender, System.EventArgs e)
{
    Form2 frm= new Form2();
    delPassData del=new delPassData(frm.funData);
    del(this.textBox1);
    frm.Show();
}

public void funData(TextBox txtForm1)
{
    label1.Text = txtForm1.Text;
}

How to pass values between forms

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