Summary of values between C # forms

Summary of values between C # forms

1. The parent form passes the value to the subform

Write in the parent form:

Formchild FC = new Formchil ();//Create a new sub-form FC. ShowDialog (this);//The connection between the subform and the parent form is realized by the above sentence TextBox2.Text = FC. str1;//has been contacted, can be transmitted value

2. The subform passes the value to the parent form

There are two ways of doing this:

(1) write in the subform:

   Formparent fp = (formparent) this. owner;//Implementation Contact     TextBox1.Text = fp. str1;//has been contacted, can be transmitted value

(2) using the subform's constructor to pass in the parent form's value (code below), you can pass the value of one or two parent form, if you want to pass the value can use ArrayList, also can pass the form directly (sample code directly to the form)

Summary: Grab the Form object and the link to pass the value

Code:

Using system.data;using system.drawing;using system.linq;using system.text;using system.windows.forms;namespace            testtransvalue{public partial class Form1:form {private string form1text;                    public string Form1text {get {return form1text;}        set {Form1text = value;}            } public Form1 () {InitializeComponent ();        Form1text = "This is the text from Form1"; private void Form1_Load (object sender, EventArgs e) {} private void Button1_cli            CK (object sender, EventArgs e) {Form2 F2 = new Form2 (); F2.            ShowDialog (this); TextBox1.Text = F2.        form2text;//above three sentences can be achieved from the subform to the parent form of the value of} private void Button2_Click (object sender, EventArgs e)            {Form3 F3 = new FORM3 (this); F3.            ShowDialog (this); TextBox2.Text = F3. form3text;//above three sentences can be implemented from the subform to the parent form of the value of}}}

Using system;using system.collections.generic;using system.componentmodel;using system.data;using System.Drawing; Using system.linq;using system.text;using system.windows.forms;namespace testtransvalue{public    partial class Form3:form    {        private string form3text = "This is the text from FORM3";        Form1 F1;        public string Form3text        {            get {return form3text;}                    set {Form3text = value;}        }        Public Form3 (Form1 Form1)        {            InitializeComponent ();            F1 = form1;        }        private void Form3_load (object sender, EventArgs e)        {        }        private void Button1_Click (object sender, EventArgs e)        {            TextBox1.Text = F1. Form1text;}}}    

The above is the C # form the summary of the value of the content, more relevant content please pay attention to topic.alibabacloud.com (www.php.cn)!

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