Question

我在C＃项目中有一个Windows表单，其中保留了一些信息。我根据用户输入动态创建了一堆文本框和组合框。

所以这里有两行，因为用户将输入指定为2。图像中的所有组件都是动态创建的。我为每个组件创建了一个用于设置属性及其行为的类。

现在的问题是我需要使用Tab键遍历组件。

当我尝试为第一个文本框设置tabindex = 1并为第二个文本框设置tabindex = 2时。我正在像下面提到的那样垂直遍历组件

我添加的代码如下。

        public class addDynamicCptboxComponents : add_components
                {
                    public override void add_dynamic_components(int getNoOfTxtBox, int pointX, int pointY, Form1 f)
                    {
                        TextBox txtBox = new TextBox();
                        f.panel1.Controls.Add(txtBox);
                        txtBox.Location = new Point(pointX, pointY);
                        txtBox.Size = new System.Drawing.Size(75, 23);
                        f.panel1.Controls.Add(txtBox);
                        txtBox.Name = "Add_txtBox" + getNoOfTxtBox;
//assigned the tabindex as 2 for the second textbox 
                        txtBox.TabIndex = 2;
                    }
                }

                public class addDynamicDateofServiceComponents : add_components
                {
                    public override void add_dynamic_components(int getNoOfTxtBox, int pointX, int pointY, Form1 f)
                    {
                        TextBox txtBox = new TextBox();
                        f.panel1.Controls.Add(txtBox);
                        txtBox.Location = new Point(pointX, pointY);
                        txtBox.Size = new System.Drawing.Size(75, 23);
                        f.panel1.Controls.Add(txtBox);
                        txtBox.Name = "Add_dos_txtBox" + getNoOfTxtBox;

    //assigned the tabindex as 1 for first textbox 
      txtBox.TabIndex = 1;
                    }
                }

但是我需要的是，我需要按如下所述水平遍历组件。

预期的输出量： enter image description here

在上图中指定了“重新排列”选项卡顺序。

Answer 1

Guessing from the name of your class you are adding rows dynamically to your form. But since you are hard coding the tab index the result per row looks like in your expected output. This means by tabbing you go from index 1 to index 1 to index 2 to index 2 and so on and so forth.

I'd advise you to have an incrementing tab index stored somewhere in your application which is incremented after it is assigned to a new dynamically created control.

As a really simple example I created a fresh forms project which just has two buttons. The first one adds a new textbox and the second button switches into a new row. And in this example everything has the tab index you require. The code behind looks like this:

public partial class Form1 : Form
{
    private int currentX = 0;
    private int currentY = 0;
    private const int tbWidth = 75;
    private const int tbHeight = 23;
    private int currentTabIndex = 0;

    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        var textBoxOne = new TextBox();
        this.Controls.Add(textBoxOne);
        textBoxOne.Location = new Point(this.currentX, this.currentY);
        textBoxOne.Size = new Size(tbWidth, tbHeight);
        textBoxOne.TabIndex = currentTabIndex;
        textBoxOne.Text = $"{currentTabIndex}";

        currentTabIndex++;

        this.currentX += tbWidth + 5;
    }

    private void button2_Click(object sender, EventArgs e)
    {
        currentY += tbHeight + 5;
        currentX = 0;
    }
}

Please bare in mind this is just a simple example. I could help you better in the context of your application if I knew more about it.

如何从左到右分配制表符顺序-WinForms C＃

1 个答案: