Question

我有一个名为Table1的sql表，它有3列 - 名称（字符串），值（浮点），日期（日期时间）。我希望在单击Button1时填充表格。所以我有一个功能＆＃34;插入＆＃34;填充表格和按钮点击功能，从两个文本框中获取值。问题是，当我打电话＆＃34;插入＆＃34;像解释它的函数给了我一些参数无效的错误消息

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Data.SqlClient;
    using System.Web.Services;
    using System.Configuration;

namespace WebApplication1
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }
        [System.Web.Services.WebMethod]  
        public void Insert(string Name, float Value, DateTime DateTime)
        {
            string connectionString = ConfigurationManager.ConnectionStrings["FatherDB"].ToString();
            using (SqlConnection con = new SqlConnection(connectionString))
            {
                using (SqlCommand cmd = new SqlCommand("Insert into Table1 ((Name) values(@Name) ,(Value) values(@Value),(Date) values(@Date))", con))
                {
                    con.Open();
                    cmd.Parameters.AddWithValue("@Name", Name);
                    cmd.Parameters.AddWithValue("@Value", Value);
                    cmd.Parameters.AddWithValue("@Date", DateTime);
                    cmd.ExecuteNonQuery();
                    con.Close();                 
                }
            }
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
              DateTime z = DateTime.Now;                   
              string Name = Box1.ToString();
              float Value = float.Parse(Box2.Text);


        Insert(Name, Value, z);
            //Insert(Name, Value, z); want to call the function with parameters from text boxes




        }
    }
}

Html页面

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication1.WebForm1" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
    <script type="text/javascript">


    </script>

    <style>
        .TBox{
            position:relative;          
            height:30px;
            width:150px;
            margin-left:10px;         
        }
        .Div {
        margin-top:50px;        
        }
    </style>

<head runat="server">
    <title></title>
</head>

<body>
    <form id="form1" runat="server">
    <div class="Div">
        <asp:TextBox id="Box1" CssClass="TBox" runat="server">
        </asp:TextBox>

        <asp:TextBox id="Box2" CssClass="TBox" runat="server">
        </asp:TextBox>
        <asp:Button id="Button1" CssClass="TBox" runat="server" Text="Enter"  />     
    </div>        

    </form>

</body>
</html>

Answer 1

你的插入语句应该是错误的：

"Insert into Table1 (Name,Value,[Date]) values(@Name, @Value,@Date)"

所以替换这个：

using (SqlCommand cmd = new SqlCommand("Insert into Table1 ((Name) values(@Name) ,(Value) values(@Value),(Date) values(@Date))", con))

使用：

using (SqlCommand cmd = new SqlCommand("Insert into Table1 (Name,Value,[Date]) values(@Name, @Value,@Date)", con))

请参阅：INSERT Examples (Transact-SQL)

将String，Float和DateTime值插入sql表

1 个答案: