如何将动态创建的文本框值存储到db中？ [英] how to store a dynamic created textbox value into db?

问题描述

我将组合框值传递给（2,3,4,5,6）：

i pass a combobox values as(2,3,4,5,6):

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            int boxes = Convert.ToInt32(comboBox1.Text);
            Form1_Load(sender, e);
            for (int i = 0; i < boxes; i++)
            {
                
                TextBox tb = new TextBox();
                tb.Location = new System.Drawing.Point(40, 120 + i * 20);
                tb.Name = "people" + i.ToString();
                tb.Size = new System.Drawing.Size(184, 20);
                tb.TabIndex = i + 2;
                tb.Text = String.Empty;
                panel1.Controls.Add(tb);
            }
          
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            panel1.Controls.Clear();
        }

这里我的问题是如何将文本框值插入db。如果用户在组合框中选择3，面板显示3文本框，但如何将文本框值保存到db..note：文本框创建基于用户选择。

here my problem is how to insert textbox values to db. if user select 3 in combobox, panel show 3 textbox but how can i save textbox values into db..note: textbox create based on user selection.

推荐答案

我认为我理解你的问题。我的解决方案是在动态文本框中添加一个事件，当值发生变化时将调用该事件。



在这种情况下我真的不明白你为什么需要要做到这一点，你的texbox就是空的。

I think I understand your problem. My solution is to add an event to the dynamic textbox which will be called when the value has changed.

In this case I really don''t understand why you need to do that, your texboxes are empty.

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            int boxes = Convert.ToInt32(comboBox1.Text);
            Form1_Load(sender, e);
            for (int i = 0; i < boxes; i++)
            {

                TextBox tb = new TextBox();
                tb.Location = new System.Drawing.Point(40, 120 + i * 20);
                tb.Name = "people" + i.ToString();
                tb.Size = new System.Drawing.Size(184, 20);
                tb.TabIndex = i + 2;
                tb.Text = String.Empty;
                tb.TextChanged += new EventHandler(tb_TextChanged);
                panel1.Controls.Add(tb);
            }

        }

        void tb_TextChanged(object sender, EventArgs e)
        {
            //your method for insert into database
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            panel1.Controls.Clear();
        }

如果您打算稍后发送到db（可能是发送按钮）创建发送按钮并执行此操作：

If you plan to send to db later (maybe a send button) create your send button and do that :

void buttonSend_Click(object sender, EventArgs e)
        {
            foreach (Control item in panel1.Controls)
            {
                if(item.GetType()==typeof(TextBox) // in case you have other control types in the panel
                {
                yourMethod(item.Text);
                }
            }
        }

告诉我你是否有帮助

Tell me if that help you

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