C# 调用存储过程需要@Id。请尽可能指定它_C#_Asp.net_Sql Server_Stored Procedures

C# 调用存储过程需要@Id。请尽可能指定它

c# asp.net sql-server stored-procedures

C# 调用存储过程需要@Id。请尽可能指定它,c#,asp.net,sql-server,stored-procedures,C#,Asp.net,Sql Server,Stored Procedures,从aspx页面 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="ID.aspx.cs" Inherits="_ID" %> <body> <form id="form1" runat="server"> <asp:TextBox ID="TextBoxChildID" runat="server" Enabled="false"></asp:TextBox> <

从aspx页面

<%@ Page Language="C#" AutoEventWireup="true" 
CodeFile="ID.aspx.cs" Inherits="_ID" %>

<body>
<form id="form1" runat="server">
<asp:TextBox ID="TextBoxChildID"  runat="server" Enabled="false"></asp:TextBox>
<div>
<asp:Button ID="Button1" runat="server" Text="Submit Return" OnClick="Button1_Click" />
</div>
</form>
</body>
</html>

还有讨厌的调试页面

“/”应用程序中出现服务器错误。程序或功能“WebCallID” 需要未提供的参数'@Id'。描述：安执行当前网站时发生未处理的异常要求请查看堆栈跟踪以了解有关堆栈的更多信息错误及其在代码中的起源

异常详细信息：System.Data.SqlClient.SqlException:过程或函数“WebCallID”需要未提供的参数“@Id”

在创建

SqlCommand

之后，您需要定义并添加参数——否则您将删除所有已设置的内容

// here, you're adding the parameter to "cmd" .... which exists from before cmd.Parameters.Add("@Id", SqlDbType.BigInt); cmd.Parameters["@Id"].Value = TextBoxChildID.Text; // and here you're creating a **NEW** "cmd" and thus WIPING OUT all work done before! cmd = new SqlCommand("WebCallID", con); cmd.CommandType = CommandType.StoredProcedure;
您需要按以下顺序编写代码：

// Create the command, define a stored procedure cmd = new SqlCommand("WebCallID", con); cmd.CommandType = CommandType.StoredProcedure; // **THEN** add the parameter - and don't call another "new SqlCommand()" again after this!! cmd.Parameters.Add("@Id", SqlDbType.BigInt); cmd.Parameters["@Id"].Value = TextBoxChildID.Text;

首先需要在
cmd=newsqlcommand（“WebCallID”，con）之后添加参数
在这里创建
SqlCommand
对象非常感谢。我真不敢相信我错过了。
// Create the command, define a stored procedure cmd = new SqlCommand("WebCallID", con); cmd.CommandType = CommandType.StoredProcedure; // **THEN** add the parameter - and don't call another "new SqlCommand()" again after this!! cmd.Parameters.Add("@Id", SqlDbType.BigInt); cmd.Parameters["@Id"].Value = TextBoxChildID.Text;