我不知道如何插入访问数据库输入类型=“日期”请

Question

我有一个网站，我做了 asp:button 并在数据库中添加了 asp:textbox 并且它起作用了。 但是当我尝试插入时，它对我不起作用。我正在尝试在 aspx.cs 中将 insert date.text 写入我的数据库，它正在查找它的 id，因为它是输入而不是 asp:textbox。

<td class="style4">
    תאריך לידה:
</td>
<td class="style3">
    <input id="date" type="Date" min="1905-01-01" max="2019-01-01" value="2018-01-01"/>
</td>

OleDbConnection connection = new OleDbConnection();
connection.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=F:\WebSites\MyWebsite\DataBase.mdb;Persist Security Info=False;";
connection.Open();
OleDbCommand command = new OleDbCommand();
command.Connection = connection;
command.CommandText = "insert into users (FirstName, LastName, Place, Email, UserName, Birthday) values('" + firstname.Text + "','" + lastname.Text + "','" + PlaceList.Text + "','" + MyEmail.Text + "','" + AccountText.Text + "','" + date.Text + "')";
command.ExecuteNonQuery();

我得到一个错误：

错误 29 名称“日期”不存在于当前 上下文 F:\WebSites\MyWebsite\Register.aspx.cs 27 242 F:\WebSites\MyWebsite\

没有找到这个id。

请问，谁能帮我解决？ :(

Answer 1

您必须指定 runat 属性以使元素可编程并可从代码隐藏中访问：

<input id="date" type="date" runat="server" />

您还应该永远直接在查询中将用户输入作为参数解析，因为这将不可避免地导致您遇到security 和其他问题（例如字符串中的引号、无效的非数值、基于用户区域设置的日期格式等）。请改用command parameters：

OleDbConnection connection = new OleDbConnection();
connection.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=F:\WebSites\MyWebsite\DataBase.mdb;Persist Security Info=False;";

try
{
    connection.Open();

    OleDbCommand command = new OleDbCommand();
    command.Connection = connection;
    command.CommandText = "insert into users (FirstName, LastName, Place, Email, UserName, Birthday) values(@firstName, @lastName, @placeList, @myMail, @accountText, @date)";
    command.Parameters.AddWithValue("@firstName", firstName.Text);
    command.Parameters.AddWithValue("@lastName", lastName.Text);
    command.Parameters.AddWithValue("@placeList", placeList.Text);
    command.Parameters.AddWithValue("@myMail", myMail.Text);
    command.Parameters.AddWithValue("@accountText", accountText.Text);
    command.Parameters.AddWithValue("@date", date.Text);

    command.ExecuteNonQuery();
}
/* handle various exceptions */
catch (Exception ex)
{
    /*...*/
}
finally
{
    connection.Close();
}

Answer 2

在您的代码中，您可以通过名称而不是 id 获取表单元素，因此为您的输入元素命名：

<input id="date" name = "date" type="Date" min="1905-01-01" max="2019-01-01" value="2018-01-01"/>
                 ^^^^^^^^^^^^

那么Request.Form["date"]就可以访问了：

command.CommandText = "insert into users (FirstName, LastName, Place, Email, UserName, Birthday) values('" + firstname.Text + "','" + lastname.Text + "','" + PlaceList.Text + "','" + MyEmail.Text + "','" + AccountText.Text + "','" + Request.Form["date"] + "')";

还要注意这个输入必须在表单标签内。

Answer 3

你需要做到runat = "server" 立即尝试！

 <input id="date" type="Date" min="1905-01-01" max="2019-01-01" value="2018-01-01" runat = "server"/>

.

 OleDbConnection connection = new OleDbConnection();
    connection.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=F:\WebSites\MyWebsite\DataBase.mdb;Persist Security Info=False;";
    OleDbCommand command = new OleDbCommand();
    command.Connection = connection;
    connection.Open();
    command.CommandText = "insert into users (FirstName, LastName, Place, Email, UserName, Birthday) values('" + firstname.Text + "','" + lastname.Text + "','" + PlaceList.Text + "','" + MyEmail.Text + "','" + AccountText.Text + "','" + date.Text + "')";
    command.ExecuteNonQuery();