我正在尝试将一些数据放到MSSQL数据库中,这是我用Visual Basic创建的。当我执行代码时,我收到以下错误:
Error 21 Cannot implicitly convert type 'string' to 'byte[]' c:\users\hussein\documents\visual studio 2012\Projects\WebApplication2\WebApplication2\defualt.aspx.cs 32 33 WebApplication2
Error 22 Cannot implicitly convert type 'string' to 'byte[]' c:\users\hussein\documents\visual studio 2012\Projects\WebApplication2\WebApplication2\defualt.aspx.cs 33 32 WebApplication2
Error 23 Cannot implicitly convert type 'string' to 'byte[]' c:\users\hussein\documents\visual studio 2012\Projects\WebApplication2\WebApplication2\defualt.aspx.cs 34 34 WebApplication2
Error 24 Cannot implicitly convert type 'string' to 'byte[]' c:\users\hussein\documents\visual studio 2012\Projects\WebApplication2\WebApplication2\defualt.aspx.cs 35 34 WebApplication2
这是我的代码,我尝试将字符串转换为byte[]
,但我的数据库中有二进制文本。
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data.SqlClient;
using System.Data;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml.Linq;
using System.Linq;
using System.Data.Linq;
namespace WebApplication2
{
public partial class defualt : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Unnamed5_Click(object sender, EventArgs e)
{
if ((TextBox1.Text == "" || TextBox2.Text == "" || TextBox3.Text == "" || TextBox4.Text == ""))
{
Label1.Text = "<h3>- Du måste fylla i alla fält, brorsan</h3>";
}
else
{
DatabaseEntities db = new DatabaseEntities();
var nyMedlem = new medlemar();
nyMedlem.namn = TextBox1.Text;
nyMedlem.anv = TextBox2.Text;
nyMedlem.losen = TextBox3.Text;
nyMedlem.epost = TextBox4.Text;
db.medlemar.Add(nyMedlem);
db.SaveChanges();
Label1.Text = "<h3>- Nu är du medlem</h3>";
}
}
}
}
答案 0 :(得分:1)
您可能将4个文本字段保存到数据库字段中,格式为byte [],因此您将获得4次转换。
试试这个:它需要修改medlemar类。
string x = TextBox1.Text;
byte[] y = System.Text.Encoding.UTF8.GetBytes(x);
nyMedlem.(something of data type byte[]) = y;