圖片框中的圖像不變

Question

請在這里我需要幫助。 我正在使用來自gridview的數據來填充文本框和pictureBox。 當我單擊一行時，文本框會填滿。 但是圖片框僅顯示一張圖像。 不管我選擇哪一行顯示相同的圖像。 請我是C＃的新手，我需要幫助。 到目前為止，這是我所做的事情private void viewMemberGrid_CellClick（object sender，DataGridViewCellEventArgs e）{

        DataGridViewRow dr = viewMemberGrid.SelectedRows[0];
        GmemIDBox.Text = dr.Cells[0].Value.ToString();

        GsurnameBox.Text = dr.Cells[1].Value.ToString();
        GfirstnameBox.Text = dr.Cells[2].Value.ToString();
        GphoneBox.Text = dr.Cells[3].Value.ToString();
        memDeptBox.Text = dr.Cells[7].Value.ToString();
        memPortBox.Text = dr.Cells[8].Value.ToString();
        GaddBox.Text = dr.Cells[5].Value.ToString();
        GdobBox.Text = dr.Cells[6].Value.ToString();

        string select = "Select NEWMEMBER.MemberID, Surname, Firstname, PhoneNumber, MemberPic, HomeAddress,DOB,DeptID,PortfolioDesc from NEWMEMBER inner join Pictures on NEWMEMBER.MemberID = Pictures.MemberID join PortfolioDescription on PortfolioDescription.PortfolioId = NEWMEMBER.PortfolioID";
        SqlConnection c = new SqlConnection("Data Source=.;Initial Catalog=Cmanager;Integrated Security=True");
        SqlCommand cmd = new SqlCommand(select, c);

        try
        {
            c.Open();
            SqlDataReader dro = cmd.ExecuteReader();

            if (dro.Read())
            {
                byte[] picarr = (byte[])dro["MemberPic"];
                MemoryStream ms = new MemoryStream(picarr);
                ms.Seek(0, SeekOrigin.Begin);
                memPicBox.Image = Image.FromStream(ms);
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }

        c.Close();

    } 

Answer 1

對您的選擇語句進行一些更改

;

我不知道您在數據庫中的MemberID列是數字還是Varchar

。

;

如果是數字

string select = "Select NEWMEMBER.MemberID, Surname, Firstname, PhoneNumber, MemberPic, HomeAddress,DOB,DeptID,PortfolioDesc from NEWMEMBER inner join Pictures on NEWMEMBER.MemberID = Pictures.MemberID join PortfolioDescription on PortfolioDescription.PortfolioId = NEWMEMBER.PortfolioID Where NEWMEMBER.MemberID = " + dr.Cells[0].Value.ToString();

或者如果是Varchar

string select = "Select NEWMEMBER.MemberID, Surname, Firstname, PhoneNumber, MemberPic, HomeAddress,DOB,DeptID,PortfolioDesc from NEWMEMBER inner join Pictures on NEWMEMBER.MemberID = Pictures.MemberID join PortfolioDescription on PortfolioDescription.PortfolioId = NEWMEMBER.PortfolioID Where NEWMEMBER.MemberID = '" + dr.Cells[0].Value.ToString() + "'";