在数据库

Question

如何随身携带数据，即使我把它放在＆＃34;数据保存＆＃34;因为我试图在保存在数据库中的数据之后做同样的事情，＆＃34;数据保存＆＃34;即使它以相同的形式出现，它也不会携带数据

private void button1_Click(object sender, EventArgs e)
{
    {
        try
        {
            connect.Open();
            OleDbCommand command = new OleDbCommand();
            command.Connection = connect;
            command.CommandText = "insert into RegisterItem([Name], [Url],[Description], [Price]) values('" + ItemName.Text + "','" + ItemUrl.Text + "','" + ItemDescription.Text + "','" + ItemPrice.Text + "')";

            command.ExecuteNonQuery();
            MessageBox.Show("Data Saved");
            txtUsername = txtID1;
            ItemName = txtName1;
            ItemDescription = txtDescription1;
            ItemPrice = txtPrice1;

            ItemName.Text = "";
            ItemDescription.Text = "";
            ItemPrice.Text = "";
            connect.Close();
        }

        catch (Exception ex)
        {
            MessageBox.Show("Error " + ex);
            connect.Close();
        }

        string str = ItemUrl.Text;
        pictureBox1.ImageLocation = str;
        //string str = textBox1.Text;
        // Image img = Image.FromFile(str);
        // pictureBox1.Image = img;             
    }
}

Answer 1

您想要的是将TextBox Text属性复制到另一个textBox文本属性，然后清除源文本框值。

txtID1.Text = txtUsername.Text;
txtName1.Text = ItemName.Text;
txtDescription1.Text = ItemDescription.Text;
txtPrice1.Text = ItemPrice.Text;

ItemName.Text = "";
ItemDescription.Text = "";
ItemPrice.Text = "";

此代码可以粘贴到command.ExecuteNonQuery()下的任意位置。