Question

我正在使用aspx和aspx.cs文件。

我需要有按钮onclick事件，它将数据发送到cs文件以对数据库执行某些操作。

到目前为止，我唯一的问题是如何发送所选的数据。

我的aspx页面是

<form id="form1" runat="server">
    <asp:Button ID="city" runat="server" Text="London" value="London" onclick="Page_Load" />  
   <asp:Button ID="city" runat="server" Text="Paris" value="Paris" onclick="Page_Load" />  
   <asp:Button ID="city" runat="server" Text="Madrid" value="Madrid" onclick="Page_Load" />  
</form>

和aspx.cs页面是

protected void Page_Load(object sender, EventArgs e)  
    {  

        String city= Request.QueryString["city"];
        SqlConnection sqlCon = new SqlConnection("xx");
        sqlCon.Open();
        SqlCommand sqlCmd = new SqlCommand("Select * from Table where City = city", sqlCon);
....
    }

所以问题是我不知道如何发送所选的值。我该怎么做？感谢

Answer 1

您在混淆Click事件和Page Load事件时，请转到：

<form id="form1" runat="server">
   <asp:Button ID="city" runat="server" Text="London" value="London" OnClick="Button_Click" />  
   <asp:Button ID="city" runat="server" Text="Paris" value="Paris" OnClick="Button_Click" />  
   <asp:Button ID="city" runat="server" Text="Madrid" value="Madrid" OnClick="Button_Click" />  
</form>


protected void Button_Click(object sender, EventArgs e)
{
    String city= Request.QueryString["city"];
    SqlConnection sqlCon = new SqlConnection("xx");
    sqlCon.Open();
    SqlCommand sqlCmd = new SqlCommand("Select * from Table where City = city", sqlCon)
}

ASP：从按钮onclick发送请求字符串

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