在窗體上顯示從數據庫中讀出的圖片:
b=(byte[])ds.Tables[0].Rows[position-1]["CustomerPhoto"];
MemoryStream stream = new MemoryStream(b, true);
stream.Write(b, 0, b.Length);
System.Drawing.Bitmap bitmap=new Bitmap(stream);
this.pictureBox1.Image=bitmap;
將圖片讀入數據庫:
openFileDialog1.Filter="*.jpg;*.bmp;*.gif|*.jpg;*.bmp;*.gif";
if(this.openFileDialog1.ShowDialog()==DialogResult.OK)
{
this.pictureBox1.Image=new Bitmap(this.openFileDialog1.FileName);
FileStream fs=File.OpenRead(this.openFileDialog1.FileName);
content=new byte[fs.Length];
fs.Read(content, 0,content.Length);
fs.Close();
}
else
{
FileStream fs=File.OpenRead("images//no.gif");
content=new byte[fs.Length];
fs.Read(content, 0,content.Length);
fs.Close();
}
將content讀入數據庫即可。
asp.net 上傳照片:
在image.aspx的Page_Load中添加如下代碼:
if(FileUpload1.HasFile==false)
{
Jscript.MessageBox(this.Page,"請選擇要上傳得圖片!");
return;
}
if (FileUpload1.PostedFile.ContentType != "image/pjpeg" && FileUpload1.PostedFile.ContentType != "image/gif")
{
Jscript.MessageBox(this.Page, "請上傳gif|jpg類型的圖片文件!");
return;
}
int len = this.FileUpload1.PostedFile.ContentLength;
//len = 1000000;
byte[] buf = new byte[len];
Stream i = this.FileUpload1.PostedFile.InputStream;
i.Read(buf, 0, buf.Length);
SqlConnection Con = new SqlConnection(objbase.connectionstring);
String SqlCmd = "update form_my set zp=@Image,zpflag='1' where id='"+Request.QueryString["id"].Trim()+"'";
SqlCommand CmdObj = new SqlCommand(SqlCmd, Con);
CmdObj.Parameters.Add("@Image",SqlDbType.Binary, len).Value = buf;
Con.Open();
if (CmdObj.ExecuteNonQuery() > 0)
{
if (Request.QueryString["action"].Trim() == "xg")
{
String SqlCmd2 = "update czjl set zpx=@Image where id='" + Session["jlid"].ToString().Trim() + "'";
SqlCommand CmdObj2 = new SqlCommand(SqlCmd2, Con);
CmdObj2.Parameters.Add("@Image", SqlDbType.Binary, len).Value = buf;
CmdObj2.ExecuteNonQuery();
Session["num"] = "2";
Response.Write("<script>location.href='shangchuanzp.aspx?id=" + Request.QueryString["id"].Trim() + "'&action=" + Request.QueryString["action"].Trim() + "</script>");
}
}
else
{
Jscript.MessageBox(this.Page,"上傳失敗,請重試!");
}
Con.Close();
asp.net 顯示圖片:
string id = Request.QueryString["id"].Trim();
string sql = "select zp,zpflag from form_my where id='" + id + "'";
try
{
DataSet ds = new DataSet();
ds = objbase.ExecSelect(sql, "form_my");
if (ds.Tables[0].Rows.Count > 0)
{
try
{
if (Session["num"].ToString() == "1")
{
int len = 1000000;
byte[] buf = new byte[len];
buf = (byte[])ds.Tables[0].Rows[0]["zp"];
SqlConnection Con = new SqlConnection(objbase.connectionstring);
String SqlCmd = "update czjl set zpy=@Image,zpx=@Image2 where id='" + Session["jlid"].ToString().Trim() + "'";
SqlCommand CmdObj = new SqlCommand(SqlCmd, Con);
CmdObj.Parameters.Add("@Image", SqlDbType.Binary, len).Value = buf;
CmdObj.Parameters.Add("@Image2", SqlDbType.Binary, len).Value = buf;
Con.Open();
CmdObj.ExecuteNonQuery();
Con.Close();
Session["num"] = "2";
}
}
catch
{
}
Response.Clear();
Response.ContentType = "image/*";
Response.BinaryWrite((byte[])ds.Tables[0].Rows[0]["zp"]);
}
}
catch
{
}
Response.End();
顯示圖片的image控件的url指向該頁,如:
this.Image1.ImageUrl = "image.aspx?id=" + Request.QueryString["id"].Trim() + "";