如何以结构化格式显示数组？答案

【问题标题】：How to display the array in structured format?如何以结构化格式显示数组？
【发布时间】：2019-05-22 06:00:47
【问题描述】：

我是 c# 编程新手，我在 c#(winforms) 中编码以获得输出：如果单击列表框中的项目，则项目应显示在文本框中，我已经编码但它的有点忙于实施以更进一步。

public partial class Form1 : Form
{
    TextBox[] tb = new TextBox[5];
    TextBox[] t = new TextBox[5];
    TextBox[] t1 = new TextBox[5];
    int[] tblist = new int[5];


    public Form1()
    {
        InitializeComponent();
        tb[0] = new TextBox();
        tb[1] = new TextBox();
        tb[2] = new TextBox();
        tb[3] = new TextBox();
        tb[4] = new TextBox();
        t[0] = new TextBox();
        t[1] = new TextBox();
        t[2] = new TextBox();
        t[3] = new TextBox();
        t[4] = new TextBox();
        t1[0] = new TextBox();
        t1[1] = new TextBox();
        t1[2] = new TextBox();
        t1[3] = new TextBox();
        t1[4] = new TextBox();

    } //how can I simplify this by not assigning new to every textbox that i had created

//此按钮点击用于保存文本框中的项目在列表框选中项目这里我们怎样才能最小化代码：列表框选择的索引不同但功能保持不变..

    private void button1_Click(object sender, EventArgs e) 
    {
        if (listBox1.SelectedIndex == 0)
        {
            tb[0].Text = textBox1.Text;
            tb[1].Text = textBox2.Text;
            tb[2].Text = textBox3.Text;
            tb[3].Text = textBox4.Text;
            tb[4].Text = textBox5.Text;
        }
        if (listBox1.SelectedIndex == 1)
        {
            t[0].Text = textBox1.Text;
            t[1].Text = textBox2.Text;
            t[2].Text = textBox3.Text;
            t[3].Text = textBox4.Text;
            t[4].Text = textBox5.Text;
        }
        if (listBox1.SelectedIndex == 2)
        {
            t1[0].Text = textBox1.Text;
            t1[1].Text = textBox2.Text;
            t1[2].Text = textBox3.Text;
            t1[3].Text = textBox4.Text;
            t1[4].Text = textBox5.Text;
        }
    }

//这里在列表框中点击了一个item，那么文本框中的item就可以存储在listbox selected index中了

    private void listBox1_Click(object sender, EventArgs e)
    {
        if (listBox1.SelectedIndex == 0)
        {

             textBox1.Text = tb[0].Text;
            textBox2.Text = tb[1].Text;
            textBox3.Text = tb[2].Text;
            textBox4.Text = tb[3].Text;
            textBox5.Text = tb[4].Text;
        }

       if (listBox1.SelectedIndex == 1)
        {   textBox1.Text = t[0].Text;
            textBox2.Text = t[1].Text;
            textBox3.Text = t[2].Text;
            textBox4.Text = t[3].Text;
            textBox5.Text = t[4].Text;
        }
        if (listBox1.SelectedIndex == 2)
        {
            textBox1.Text = t1[0].Text;
            textBox2.Text = t1[1].Text;
            textBox3.Text = t1[2].Text;
            textBox4.Text = t1[3].Text;
            textBox5.Text = t1[4].Text;
        }
    `

【问题讨论】：

标签： c# winforms

【解决方案1】：

您可以为数组使用for 循环。

for(var i = 0; i < tb.Length; i++)
{
    tb[i] = new TextBox();
    t[i] = new TextBox();
    t1[i] = new TextBox();
}

【讨论】：

【解决方案2】：

这是我使用的代码中的 sn-p。

将您的值加载到DataTables 并将tableLayoutPanel 添加到您希望文本框所在的表单中。

使用datatable 调用SetTextboxes 函数（或者您可以在此处发送您的list，只需更改参数并循环一点。

这将非常快速地将文本框动态添加到您的表单中。

class SurroundingClass
{
    private void SetTextboxes(datatable DT)
    {
        //Clear the previous textboxes
        pnlLayoutExpenses.Controls.clear();
       //loop through table and create new textboxes
        foreach (DataRow row in DT.Rows)
            formAddTextbox(row("dataTableColumnWhichHoldsTextboxText"));
    }



    private void formAddTextbox(string fieldname)
    {

        Integer elementCount = 0;

        TextBox txtYourField = new TextBox();
        txtYourField.Width = 100;
        txtYourField.Height = 20;
        //txtYourField.ReadOnly = true;
        txtYourField.Text = fieldname;
        txtYourField.tag = elementCount; 


        // Use tableLayoutPanel
        pnlLayoutExpenses.SetCellPosition(txtType, new TableLayoutPanelCellPosition(0, elementCount));

        pnlLayoutExpenses.Controls.Add(txtType);
    }
}

【讨论】：