如何在c#windows窗体中获取动态数字下载和文本框值

时间:2016-08-26 12:55:28

标签: c# .net textbox iteration numericupdown

我有一个代码,其中TextBox和NumericUpDown工具是通过foreach循环动态生成的。现在,我希望能够获得两个值,每次迭代时,它们的值都将被添加到数据库中的同一行。我有获取NumericUpDown值的代码,我想知道如何实现获取TextBox值。

用于生成动态NumericUpDown和TextBox的代码

t = temp.Split(';'); // e.g. t = Arial;32

int pointX = 70;
int pointY = 80;

int pointA = 300;
int pointB = 80;

for (int i = 0; i < N; i++)
{

    foreach (object o in t) 
    {
        TextBox a = new TextBox();
        a.Text = o.ToString();
        a.Location = new Point(pointX, pointY);
        a.Size = new System.Drawing.Size(150, 25);

        panel.Controls.Add(a);
        panel.Show();
        pointY += 30;

        NumericUpDown note = new NumericUpDown();
        note.Name = "Note" + i.ToString();
        note.Location = new Point(pointA, pointB);
        note.Size = new System.Drawing.Size(40, 25);
        note.Maximum = new decimal(new int[] { 10, 0, 0, 0 });
        panel.Controls.Add(note);
        pointB += 30;
    }
 }

单击按钮时获取动态NumericUpDown值的代码(数据库代码可用)

foreach (NumericUpDown ctlNumeric in panel.Controls.OfType<NumericUpDown>())
        {
            var value = ctlNumeric.Value;
            int number = Decimal.ToInt32(value);
            sample_save = "INSERT INTO forthesis (testVal) VALUES ('" + number + "');";
            MySqlConnection myConn = new MySqlConnection(connectionString);
            MySqlCommand myCommand = new MySqlCommand(sample_save, myConn);
            MySqlDataAdapter da = new MySqlDataAdapter(myCommand);
            MySqlDataReader myReader;
            myConn.Open();
            myReader = myCommand.ExecuteReader();
            myConn.Close();
            MessageBox.Show(number.ToString());
        }

示例输出,每行都会插入数据库中 enter image description here

如何获取TextBox中的值呢?非常感谢您的帮助。非常感谢你!!!

1 个答案:

答案 0 :(得分:0)

也许您可以使用字符串 - TextBox字典来保存匹配的配对文本框,如下所示:

Dictionary<string, TextBox> textboxes = new Dictionary<string, TextBox>();
for (int i = 0; i < N; i++)
{
    foreach (object o in t) 
    {
        TextBox a = new TextBox();
        .....

        NumericUpDown note = new NumericUpDown();
        note.Name = "Note" + i.ToString();
        ......

        textboxes.Add(note.Name, a);
    }
}

foreach (NumericUpDown ctlNumeric in panel.Controls.OfType<NumericUpDown>())
{
    var value = ctlNumeric.Value;
    int number = Decimal.ToInt32(value);

    TextBox tb = textboxes[ctrlNumeric.Name];
    String text = tb.Text;
    .........
}

如果要删除TextBoxs&amp; NumericUpDowns - 那么你也需要清除字典 - 否则它将保留对它们的引用&amp;它们不会被垃圾收集器清理。