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How to pass values between WinForm forms?

. Public attribute values through the form Features: easy to implement The implementation code is as follows: Define a public attribute Form2Value in the form Form2 to get and set the text value of textBox1 Public string Form2Value { Get { Return this. textBox1.Text; } Set { This. textBox1.Text = value; } } This is called in form Form1. Form2 f2 = new Form2 (); F2.Form2Value = "OK"; // assign OK to textBox1 of Form2 F2.ShowDialog (); 5. Public attribute values and Owner attributes of the form

Fixed repeated variable definitions when multiple files are created in Keil

Definitions Symbol: K Module: 222. OBJ (222) The above error occurs because the variable k is repeatedly defined. Add extern before the variable definition in your header file, and then define it before a program in a C file. * ** Warning L1: unresolved external symbol Symbol: K Module: 111. OBJ (111) * ** Warning L2: reference made to unresolved external Symbol: K Module: 111. OB

Winform development, form display, and form value passing knowledge

example, in Form form1Form2 F2 = new form2 ();F2.showdialog (this );// OrF2.show (this );// OrF2.owner = this;F2.showdialog (); In this way, the F2 owner is form1. B. input values in winformI learned about the display of the form, and then summarized the method of passing values in the form: 1. ConstructorFeatures: it is easy to transmit values in one way (values cannot be transferred to each other ).The implementation code is as follows:In form form2Int value1;String value2; Public form2 (INT

C # winform development, passing values between form display and form

;F2.showdialog (); In this way, the F2 owner is form1. B. input values in winformI learned about the display of the form, and then summarized the method of passing values in the form: 1. ConstructorFeatures: it is easy to transmit values in one way (values cannot be transferred to each other ).The implementation code is as follows:In form form2Int value1;String value2; Public form2 (INT value1, string value2){Initializecomponent (); This. value1 = value1;This. value2 = value2;} This is called in

Magic constants in php

The Magic constant $ _ SERVER of php stores information about the current SERVER. several values are as follows: $ _ SERVER ["QUERY_STRING"], $ _ SERVER ["REQUEST_URI"], $ _ SERVER ["SCRIPT_NAME"] and $ _ SERVER ["PHP_SELF"] are often confusing. The following describes the differences between QUERY_STRING, REQUEST_URI, SCRIPT_NAME, and PHP_SELF variables in the $ _ SERVER function through examples, master the relationships between the four, so that you can correctly obtain the required values in

Summary of input values in WinForm

I learned about the display of the form, and then summarized the method of passing values in the form: 1. ConstructorFeatures: it is easy to transmit values in one way (values cannot be transferred to each other ).The implementation code is as follows:In form Form2Int value1;String value2; Public Form2 (int value1, string value2){InitializeComponent (); This. value1 = value1;This. value2 = value2;} This is called in form Form1.New Form2 (111, "222").

PHP obtains the functions and parameters of the current URL.

"] = "/"$ _ Server ["script_name"] = "/index. php"$ _ Server ["php_self"] = "/index. php"2, http://www.biuuu.com /? P = 222 (with query)Result:$ _ Server ["QUERY_STRING"] = "P = 222 ″$ _ Server ["request_uri"] = "/? P = 222 ″$ _ Server ["script_name"] = "/index. php"$ _ Server ["php_self"] = "/index. php"3, http://www.biuuu.com/index.php? P =

How to use Python to detect duplicate images through a hash algorithm

the binary value array. >>> from PIL import Image>>> img = Image.open('data/cat_grumpy_orig_after_step_2.png')>>> width, height = img.size>>> pixels = list(img.getdata())>>> for col in xrange(width):... print pixels[col:col+width]...[254, 254, 255, 253, 248, 254, 255, 254, 255][254, 255, 253, 248, 254, 255, 254, 255, 255][253, 248, 254, 255, 254, 255, 255, 255, 222][248, 254, 255, 254, 255, 255, 255, 222

WinForm How to pass values between forms

passed back, or it is stored in other variables to access the variable.Iv. through the form's public property valuesFeatures: Simple to implementThe implementation code is as follows:Define a public property form2value in form Form2, get and set the text value of TextBox1public string Form2value{Get{return this.textBox1.Text;}Set{This.textBox1.Text = value;}}This is called in form Form1.Form2 F2 = new Form2 ();F2. Form2value = "OK"; Assign the TextBox1 to Form2 OKF2. ShowDialog ();V. Through th

A large summary of the method of passing values between C # forms (GO)

The first method:Create a class that declares the fields that are used to store the received. It is stored in the field when it is used, and is called directly by the class name. (This method of passing is bidirectional)The second method:1. Defined in Form1public string Name = "* * * *"2. Create the Form1 object in the Form2,Form1 f = new Form1 ();And then you can go through F. Name is value.The third method: Use the constructor functionIn the form Form2int value1;String value2;Public Form2 (int

WinForm How to pass values between forms

the values to the other form first, the form is passed back, or it is stored in other variables to access the variable. Iv. through the form's public property values Features: Simple to implement The implementation code is as follows: Define a public property form2value in form Form2, get and set the text value of TextBox1 public string Form2value { Get { return this.textBox1.Text; } Set { This.textBox1.Text = value; } } This is called in form Form1. Form2 F2 = new Form2 (); F2. Form2value = "O

Php+mysql do backstage, how to realize user login, push message

passed in the same time. For example, jump to the Home page (index), index and then determine the value of Mes_status, to the user to prompt. 2. If you send it to more than one person In fact, your message table of the primary key is message_id, and sent to several people is not related, when he logged in, only query the user himself as the receiver, the number of messages received. For example, there are some data in the data table: message_id send_id Message_date Messa

Android method transfer value and change

("======================= ");System. out. println ("222 id =" + id );System. out. println ("222 mString =" + mString );System. out. println ("222 mPerson. getAge () =" + mPerson. getAge ());}});}} Package cn. testchangevar;Import android. OS. Bundle;Import android. view. View;Import android. view. View. OnClickListener;Import android. widget. Button;Import andro

Python Regular Expressions

(String)Print (Re.search (' w.b ', ' www.baidu.com '))Results: Print (Re.search (' w.b ', ' www.baidu.com '). Group ())Results: w.bPrint (Re.search (' WWA ', ' www.baidu.com '))Result: Nonedef sub (pattern, REPL, String, count=0, flags=0): "" "Return the string obtained by replacing the leftmost Non-overlapping occurrences of the pattern in string by the Replacement repl. REPL can be either a string or a callable; If a string, backslash escapes in it is processed. If it is A ca

A menu written in jquery slides from left to right.

(# 99f, # 96f );Background:-ms-linear-gradient (# 99f, # 9f );Background:-o-linear-gradient (# 99f, # 96f );Background: linear-gradient (# 99f, # 96f );}/* Here is the css for navigation ,*/Display: none;Width: 272px;Min-height: 100%;Background: # 3d3d3d;Position: absolute;Right: 0;Top: 0;Z-index: 3;}. SlideLeftMenu. quick-toolbar,. SlideLeftMenu. list-item {Display: block;Width: 100%;Float: left;Height: 42px;Line-height: 42px;Background:-webkit-gradient (linear, left top, left bottom, from (#4

Schematic set 6: LinkedHashMap, schematic linkedhashmap

. Assume that string 111 is placed on the position table [1] and the generated Entry address is 0x00000001. The figure shows this: If you are familiar with the source code of the listing list, it is not difficult to understand, or explain it. Note that the existingEntry indicates the header: 1. after = existingEntry, that is, the after = header address of the newly added Entry, that is, after = 0x00000000 2. before = existingEntry. before: The before of the newly added Entry is the before addre

PHP $ _ SERVER variable usage

path 1, $ _ SERVER ["QUERY_STRING"]Description: query string2, $ _ SERVER ["REQUEST_URI"]Description: The URI required to access this page 3, $ _ SERVER ["SCRIPT_NAME"]Description: path containing the current script 4, $ _ SERVER ["PHP_SELF"]Description: File Name of the script being executed Instance:1, http://www.bKjia. c0m/(open the home page directly)Result:$ _ SERVER ["QUERY_STRING"] = ""$ _ SERVER ["REQUEST_URI"] = "/"$ _ SERVER ["SCRIPT_NAME"] = "/index. php"$ _ SERVER ["PHP_SELF"] = "/i

Python full stack development, Day1, python development day1

('invite you to dinner') elif choice = '6 ': print ('Week-free jobs') elif choice = '3': print ('play together ') else: print ('input error ') Execution output = Compare= Value assignment 5th types of Structures If condition: Result else: Result As long as the requirement exists, if Example Age = int (input ('Guess my age: ') if True: if age = 18: print ('Congratulations, you guessed it') else: print ('This cannot be seen... ') else: print ('input error ') Execution output Strings cannot b

Android parses json data, android parses json data

[Switch] parse json data for Android and parse json data for android 1. json format2. json parsing 3. gson parsing 4. fastjson parsing 1. Json format a lightweight data exchange format. Xml and json are generally used for data transmission and exchange over the network. Two structures: 1) object (key-value set) {"id": "1001", "name": "zhangshan", "address": "shanghai"} 2) array (array object), with the key-value object included in [] {"Students": [{"sid": 1001, "name": "zhangsan", "addr": "Yicha

What should I do if my Xiaomi 3 ringtones are small? How to increase the ringtone of Xiaomi 3 (ROOT required)

I test the model for Millet 3TD version. Millet 3 Ringtones Increase is the use of the RE manager directly modify the system etc file parameters, the following values have a 225 of the value suggested that everyone set to 222 best. The other do not move, the first group of numbers is the number of hundreds of the volume of the headset, 222 of the value is related to the ring size, the specific

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