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我想插入/删除,使用asp.net更新sql数据库中的图像。我插入的代码是:用asp.net插入/更新/从sql数据中删除图像
Stream strm = FileUpload1.PostedFile.InputStream;
BinaryReader br = new BinaryReader(strm);
byte[] img = br.ReadBytes(Convert.ToInt32(strm.Length));
imgDetail.ImageUrl = "data:image/png;base64," + Convert.ToBase64String(img, 0, img.Length);
imgDetail.Visible = true;
try
{
cmd = new SqlCommand("insert into Persons (id,Name,Surname,Address,Phone,Picture,Department) values (@id,@Name,@Surname,@Address,@Phone,@img,@Department)",con);
cmd.Parameters.AddWithValue("id", txtId.Text);
cmd.Parameters.AddWithValue("Name", txtName.Text);
cmd.Parameters.AddWithValue("Surname", txtSurname.Text);
cmd.Parameters.AddWithValue("Address", txtAddress.Text);
cmd.Parameters.AddWithValue("Phone", txtPhone.Text);
cmd.Parameters.AddWithValue("img", img);
cmd.Parameters.AddWithValue("Department", Department.Text);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
我觉得出事了与添加的图像,也许我这样做不对。现在当我在我的gridview的一些记录点击,在文本框记录显示的所有数据,但我不能在图像箱中显示图像。我怎样才能做到这一点? 这是在文本框displaing数据的一部分:
foreach (GridViewRow row in GridView1.Rows)
{
if (row.RowIndex == GridView1.SelectedIndex)
{
GridViewRow row1 = GridView1.SelectedRow;
txtId.Text = row.Cells[0].Text;
txtName.Text = row.Cells[1].Text;
txtSurname.Text = row.Cells[2].Text;
txtAddress.Text = row.Cells[3].Text;
txtPhone.Text = row.Cells[4].Text;
Department.Text = row.Cells[5].Text;
Image.??????