Question

我需要大约200个按钮作为不同颜色的指示器，我有一个真假的列表，并想知道是否有办法更新它们而不必写出200个按钮的名称。像这样：

    ladder.df <- data.frame(start=c(1,4,9,21,28,36,51,71,80), end=c(38,14,31,42,84,44,67,91,100))
snake.df <- data.frame(start=c(98,95,93,87,64,62,56,49,47,16), end=c(78,75,73,24,60,19,53,11,26,6))

game<-function(nop){
positions<-c()
curpos <- 0 # Current location
nroll <- 0 # Number of rolls
snakes <- 0 # Number of snakes encountered
ladders <- 0 # Number of ladders encountered
players<-c(1:nop)
ladders2<-c()
snakes2<-c()

for(i in 1:nop){
while(curpos < 100) {
  roll <- sample(6,1) 
  curpos <- curpos + roll 
  nroll <- nroll + 1 
  positions<-append(positions,curpos)

  # Need to check if we landed on a ladder or slide and move forward or back
  if (any(ladder.df$s %in% curpos)) {
    curpos <- ladder.df$e[ladder.df$s %in% curpos]
    ladders <- ladders + 1
  }
  if (any(snake.df$s %in% curpos)) {
    curpos <- snake.df$e[slide.df$s %in% curpos]
    snakes <- snakes + 1 
  }
}
data<-data.frame("Player:"=players[i],"Ladders"=ladders,"Snakes"=snakes,"Number of rolls"=nroll)
print(data)
}
}

但是while (servoNumber != numberOfServos) { if (Convert.ToBoolean(ListServo1Inputs[0 + inputToLookFor]) == true) { indicatorS1Di1.BackColor = Color.LawnGreen; } else { indicatorS1Di1.BackColor = Color.DarkGray; } }计算循环中的下一行S2。类似于：indicatorS1Di1.BackColor

也许这只是一个简单的解决方案：

indicatorS[increment number here]Di1.BackColor

非常感谢兰德随机！通过一些小的修改，这就是现在的样子：

Final look

Answer 1

如果您自己创建这些按钮，可以将它们放在字典中，并将增量名称作为键。

然后您可以使用以下命令更改值：

ServoButtonDict[$"indicatorS{incrementalNumber}Di1"].BackColor = Color.LawnGreen;

Answer 2

您正在寻找一个foreach循环，这样您就可以动态地遍历该按钮。

foreach (var indicator in ListServoInputs) {
    if (indicator.Checked) {
        indicator.BackColor = Color.LawnGreen;
    } else {
        indicator.BackColor = Color.DarkGray;
    }
}

或者您可以使用ternary operator进行更多简化，这对于简单但冗长的if / else语句非常有用。

foreach (var indicator in ListServoInputs) {
    indicator.BackColor = indicator.Checked ? Color.LawnGreen : Color.DarkGray;

Answer 3

在你的加载事件中构建一个控件列表。

_buttons = new List<Button>(); //this is a field and not a local variable in the load event
for (var i = 0; i < ListServo1Inputs.Count; i++)
{
    _buttons.Add((Button)this.Controls.Find($"indicatorS{i}Di1", true).First());
}

更新颜色使用以下内容：

for (var i = 0; i < ListServo1Inputs.Count; i++)
{
    //you can now use the same index for _controls and ListServo1Inputs - since you constructed a list of controls based on ListServo1Inputs in the loaded event
    _buttons[i].BackColor = Convert.ToBoolean(ListServo1Inputs[i]) ? Color.LawnGreen : Color.DarkGray;
}

修改

根据您的评论。

我会动态创建按钮。在您的表单中，您将需要一个带有单击事件和面板的按钮。

public partial class Form1 : Form { //stores the booleans in a list private readonly List<bool> _values = new List<bool>(); //I use a random to generate the booleans _random.Next(2) will produce either 0 or 1 and _random.Next(2) == 1 will give true on 1 and false on 0 private readonly Random _random = new Random(); public Form1() { InitializeComponent(); //fill the list FillValues(); //iterate over the list for (var index = 0; index < _values.Count; index++) { //create a button for each entry var btn = new Button(); btn.Name = "Values" + index; //dont need the name, but you can fill it as you see fit btn.Width = 70; //set the width as you desire btn.Height = 20; //set the height as you desire btn.Text = btn.Name; //set a text if you like to, I used the .Name //some math to position the buttons, I here use a grid of 12 since you mentioned your naming scheme changes at 12 S1Di1 -> S1Di12 and than S2Di1 -> S2Di12 btn.Top = (index / 12) * (btn.Height + btn.Margin.Top); btn.Left = (index % 12) * (btn.Width + btn.Margin.Left); panel1.Controls.Add(btn); //add the button to a panel thats inside your form, only the buttons that get created here should be inside that panel nothing more } //update the colors of the button UpdateColors(); } private void FillValues() { //clear the values, before filling it _values.Clear(); //you mentioned 200 buttons, so here is a for loop for 200 entries and fill the values with a bool for (int i = 0; i < 200; i++) _values.Add(_random.Next(2) == 1); //of course you dont need to clear the list and re-add the items everytime this method gets called, you can check if (_values.Count == 0) and only than add the items and in else set the new values with _values[i] = newValue - its just the lazy way :) } private void UpdateColors() { //iterate over the list and set the panels Controls[index] to the color - the index will match with the list since you have created the buttons based on the list previously for (int i = 0; i < _values.Count; i++) panel1.Controls[i].BackColor = _values[i] ? Color.LawnGreen : Color.DarkGray; } private void button1_Click(object sender, EventArgs e) { //to have new bools in list fill the values FillValues(); //update the colors UpdateColors(); } }

有了这个，你最终会得到：

当你点击button1时：

更新了很多按钮或复选框？

3 个答案: