Question

我目前有一个表格，我动态创建了一个文本框，按钮等的2D数组。我刚发现我的程序的其他部分无法访问我创建的文本框？我有办法做到吗？

我的代码类似于：

    public Form1()
    {
        int column = 4;

        System.Windows.Forms.TextBox[,] textbox = new System.Windows.Forms.TextBox[column, row];

        for (int i = 0; i < column; i++)
        {
            for (int j = 0; j < row; j++)
            {
                textbox[i, j] = new System.Windows.Forms.TextBox();
                textbox[i, j].Size = new Size(80, 20);
                textbox[i, j].Name = "textbox_" + i + "_" + j;
                textbox[i, j].Location = new System.Drawing.Point((i * 80) + 20, (j * 20) + 30);
                textbox[i, j].Visible = true;
                Controls.Add(textbox[i, j]);

            }
        }

        /////fill the textboxes with data//////
    }

我无法访问方法外的文本框，我该怎么办？你能提供一些有效的编码吗？我对c＃还是比较新的，非常感谢你

Answer 1

您可以添加类级别属性，就像

一样

public class Form1
{
    public System.Windows.Forms.TextBox[,] textbox { get; set; }

    public Form1()
    {
        int column = 4;

        textbox = new System.Windows.Forms.TextBox[column, row];

        for (int i = 0; i < column; i++)
        {
            for (int j = 0; j < row; j++)
            {
                textbox[i, j] = new System.Windows.Forms.TextBox();
                textbox[i, j].Size = new Size(80, 20);
                textbox[i, j].Name = "textbox_" + i + "_" + j;
                textbox[i, j].Location = new System.Drawing.Point((i * 80) + 20, (j * 20) + 30);
                textbox[i, j].Visible = true;
                Controls.Add(textbox[i, j]);

            }
        }
    }
}

然后你可以简单地做

Form1 myForm = GetMyForm();
System.Windows.Forms.TextBox[,] theTextboxArray = myForm.textbox;

Answer 2

当然，您无法使用textbox_i_j访问它们，其中i＆amp; j是具有智能感知的数字，因为它不受支持，但你可以像这样得到它们

TextBox GetTB(string name)
{
 return ( Controls.FindControl(name) as TextBox );
}

Answer 3

Declare int column = 4;
System.Windows.Forms.TextBox[,] textbox = new System.Windows.Forms.TextBox[column, row];

Form1构造函数之外。您的代码应如下所示：

int column = 4;
System.Windows.Forms.TextBox[,] textbox;
public Form1()
{


    textbox = new System.Windows.Forms.TextBox[column, row];

    for (int i = 0; i < column; i++)
    {
        for (int j = 0; j < row; j++)
        {
            textbox[i, j] = new System.Windows.Forms.TextBox();
            textbox[i, j].Size = new Size(80, 20);
            textbox[i, j].Name = "textbox_" + i + "_" + j;
            textbox[i, j].Location = new System.Drawing.Point((i * 80) + 20, (j * 20) + 30);
            textbox[i, j].Visible = true;
            Controls.Add(textbox[i, j]);

        }
    }

    /////fill the textboxes with data//////
}

Answer 4

我在网上搜索答案，而我等待一些聪明人回答我的问题。我使用字典来检索文本框，如下所示：

Get a Windows Forms control by name in C#

//声明

  Dictionary <String, System.Windows.Forms.TextBox> dictionaryTextBox = new Dictionary<string, System.Windows.Forms.TextBox>();

//创建数组

 System.Windows.Forms.TextBox[,] textbox = new System.Windows.Forms.TextBox[column, row];

        for (int i = 0; i < column; i++)
        {
            for (int j = 0; j < row; j++)
            {
                textbox[i, j] = new System.Windows.Forms.TextBox();
                textbox[i, j].Size = new Size(80, 20);
                textbox[i, j].Name = "textbox_" + i + "_" + j;
                textbox[i, j].Location = new System.Drawing.Point((i * 80) + 20, (j * 20) + 30);
                textbox[i, j].Visible = true;
                Controls.Add(textbox[i, j]);


                  //new added
                dictionaryTextBox.Add (textbox[i, j].Name, textbox[i, j]);

            }
        }

//检索

        System.Windows.Forms.TextBox retrieve = dictionaryTextBox["textbox_3_3"];

        retrieve.Text = "apple";

如何从程序的其他部分访问表单中动态生成的文本框？

4 个答案: