C＃如何與照片尋找一些幫助，瞭解更新的數據：'（

Question

嗨，大家好我如何與照片更新我的數據沒有錯誤 我的數據庫名字爲表和表的內容是

• ID，
• 名字，
• 中間名，
• 姓氏，
• 性別，
• 地址，
• 出生日期，
• PlaceofBirth，
• FathersName，
• FathersOccupation，
• MothersName，
• MothersOccupation，
• 監護人，
• 關係，
• GuardianOccupation，
• 圖像，

我編輯了一些數據，但是，這是出現的時候，我改變/編輯它，我該如何解決這個：

private void button3_Click(object sender, EventArgs e) 
{ 
    byte[] images = null; 
    FileStream fs = new FileStream(img, FileMode.Open, FileAccess.Read); 
    BinaryReader br = new BinaryReader(fs); 
    images = br.ReadBytes((int)fs.Length); 

    con.Open(); 

    string sql = "update table1 set id=@id,FirstName=@FirstName,MiddleName=@MiddleName,LastName=@LastName,Gender=@Gender,DateofBirth=@DateofBirth,PlaceofBirth=@PlaceofBirth,Address=@Address,FathersName=@FathersName,FathersOccupation=@FathersOccupation,MothersName=@MothersName,MothersOccupation=@MothersOccupation,Guardian=@Guardian,Relation=@Relation,GuardianOccupation=@GuardianOccupation,@images=images where id=@id"; 

    cmd = new SqlCommand(sql, con); 
    cmd.Parameters.Add(new SqlParameter("@id", textBox1.Text)); 
    cmd.Parameters.Add(new SqlParameter("@FirstName", textBox2.Text)); 
    cmd.Parameters.Add(new SqlParameter("@MiddleName", textBox3.Text)); 
    cmd.Parameters.Add(new SqlParameter("@LastName", textBox4.Text)); 
    cmd.Parameters.Add(new SqlParameter("@Gender", comboBox1.Text)); 
    cmd.Parameters.Add(new SqlParameter("@DateofBirth", dateTimePicker1.Value.ToString())); 
    cmd.Parameters.Add(new SqlParameter("@PlaceofBirth", textBox5.Text)); 
    cmd.Parameters.Add(new SqlParameter("@Address", textBox6.Text)); 
    cmd.Parameters.Add(new SqlParameter("@FathersName", textBox7.Text)); 
    cmd.Parameters.Add(new SqlParameter("@FathersOccupation", textBox8.Text)); 
    cmd.Parameters.Add(new SqlParameter("@MothersName", textBox9.Text)); 
    cmd.Parameters.Add(new SqlParameter("@MothersOccupation", textBox10.Text)); 
    cmd.Parameters.Add(new SqlParameter("@Guardian", textBox11.Text)); 
    cmd.Parameters.Add(new SqlParameter("@Relation", textBox12.Text)); 
    cmd.Parameters.Add(new SqlParameter("@GuardianOccupation", textBox13.Text)); 
    cmd.Parameters.Add(new SqlParameter("@images", images)); 

    int n = cmd.ExecuteNonQuery(); 
    con.Close(); 

    viewlist(); 
    MessageBox.Show(n.ToString() + "Update Successfull"); 
} 

第二錯誤時，我並沒有瀏覽和顯示圖片：

Answer 1

您的更新聲明錯誤！您試圖分配列參數。（@images=images）

string sql = "update table1 set id=@id,FirstName=@FirstName,MiddleName=@MiddleName,LastName=@LastName,Gender=@Gender,DateofBirth=@DateofBirth,PlaceofBirth=@PlaceofBirth,Address=@Address,FathersName=@FathersName,FathersOccupation=@FathersOccupation,MothersName=@MothersName,MothersOccupation=@MothersOccupation,Guardian=@Guardian,Relation=@Relation,GuardianOccupation=@GuardianOccupation,@images=images where id=@id"; 

試試這個：

string sql = "update table1 set id=@id,FirstName=@FirstName,MiddleName=@MiddleName,LastName=@LastName,Gender=@Gender,DateofBirth=@DateofBirth,PlaceofBirth=@PlaceofBirth,Address=@Address,FathersName=@FathersName,FathersOccupation=@FathersOccupation,MothersName=@MothersName,MothersOccupation=@MothersOccupation,Guardian=@Guardian,Relation=@Relation,GuardianOccupation=@GuardianOccupation,image=@images where id=@id";