Question

我是C＃编程的新手，我已经在c＃（winforms）中进行了编码，以得到如下输出：如果单击列表框中的项目，则该项目应显示在文本框中，我已经对其进行了编码，有点忙于实施进一步。

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

//此按钮单击用于将项目保存在列表框中所选项目的文本框中这里如何减少代码：列表框选择的索引不同，但是功能保持不变。

    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;
        }
    }

///在此处单击列表框中的一个项目，这样文本框中的项目便可以存储在列表框中选定的索引中

    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;
        }
    `

Answer 1

您可以为阵列使用for循环。

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

Answer 2

这是我使用的代码的片段。

将您的值加载到DataTables中并将tableLayoutPanel添加到您希望文本框进入的表单中。

使用datatable调用 SetTextboxes 函数（或者您可以在此处发送list，只需更改参数并稍微循环一下即可。

这将很快将文本框动态添加到表单中。

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);
    }
}

如何以结构化格式显示数组？

2 个答案: