Question

SqlCommand cmdadmin = new SqlCommand("loginvalidation");
cmdadmin.Connection = con;
cmdadmin.CommandType = CommandType.StoredProcedure;
SqlParameter paramadmin;
paramadmin = new SqlParameter("@vtype",drd1.ToString());
SqlParameter paramadmin1;
paramadmin1 = new SqlParameter("@username",Label1.Text);
cmdadmin.Parameters.Add(paramadmin1,paramadmin);

这是我的C＃代码

我正在使用存储过程在select命令中显示以下结果但我不知道如何在select语句中使用多个参数

Answer 1

存储过程中的select语句与此类似：

SELECT * FROM <YourTable> WHERE Column1=@vtype <AND/OR> Column2=@username

Answer 2

你应该这样使用

SqlCommand cmdadmin = new SqlCommand("loginvalidation");
cmdadmin.Connection = con;
cmdadmin.CommandType = CommandType.StoredProcedure;
SqlParameter[] parameters ={
                         new SqlParameter("vtype",drd1.ToString()),
                         new SqlParameter("username",Label1.Text),
                        };
foreach (var p in parameters)
   {   
       cmdadmin.Parameters.Add(parameters);
   }

Answer 3

要添加多个参数，您可以创建一个SqlParameter

数组

SqlCommand sql = new SqlCommand();

SqlParameter[] parameter = {
new SqlParameter("@name", "Test"), 
new SqlParameter("@age", "24")};

sql.Parameters.Add(parameter);

存储过程中的

：

@name varchar(50)
@age nvarchar(10)

SELECT * 
FROM <tableName> 
WHERE Name = @name AND Age = @age

Answer 4

        SqlCommand cmdadmin = new SqlCommand("loginvalidation");
        cmdadmin.Connection = con;
        cmdadmin.CommandType = CommandType.StoredProcedure;

        SqlParameter[] prms = new SqlParameter[] 
        {
            new SqlParameter("@vtype", drd1.ToString()),
            new SqlParameter("@username", Label1.Text)
        };

        cmdadmin.Parameters.AddRange(prms);

带有多个参数的存储过程select语句C＃

4 个答案: