c#读写tif文件,分割tif文件

C#读写TIF文件


各位谁有tif文件读写的经验 最近有一个传真处理的项目比较头疼

 


浮云游子意,落日故人情MSN:[email protected]
   


不知道你的tif是什么版本的,如果版本比较老,直接用c#就可以读,如果是新版本的,可能得找.net 的控件了。tif的版本非常多,以前做过一个扫描仪的程序,这个tif文件连acdsee和PS都读不了。只能去下控件了。

系统生成一个图片例如“1.jpg”;  

   先读取文件,判断页面的数量,如果是多页面的,就读取页面数。单个的话就直接读取到1.jpg中返回。

多个页面的话,选择哪个页面就读取选择的页面,写到1.jpg中并返回。

我把一些基本的代码复制过来供大家看看。希望对大家有所帮助:

    我这里用到了框架:

     index.aspx页面代码:

    <iframe src=<%=pppp%> height="600" width="1024"></iframe>

    <br />
    <asp:Label ID="Label1" runat="server" Width="140px"></asp:Label>

    <aspropDownList ID="DropDownList1" runat="server" AutoPostBack="True"
        Height="16px" onselectedindexchanged="DropDownList1_SelectedIndexChanged"
        Width="166px">
    </aspropDownList>

   index.aspx.cs代码:

using System.IO;
using System.Drawing;
using System.Drawing.Imaging;


public string address;
    public string pppp;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            address = "img/123.tif";
            Get_tif_Count();
            pppp = "Default.aspx?kk=0";
        }

    }
    private void Get_tif_Count()
    {
        Bitmap bt = new Bitmap(Server.MapPath(address));
        Guid gud = (Guid)bt.FrameDimensionsList.GetValue(0);
        FrameDimension fds = new FrameDimension(gud);
        int totalPage = bt.GetFrameCount(fds);
        if (totalPage == 1)
        {
            Response.Redirect("Default.aspx";
        }
        this.Label1.Text = "共" + totalPage + "页";
        Hashtable ht = new Hashtable();
        for (int i = 0; i < totalPage; i++)
        {
            ht.Add(i, i + 1);
        }
        this.DropDownList1.DataSource = ht;
        this.DropDownList1.DataTextField = "Value";
        this.DropDownList1.DataValueField = "Key";
        this.DropDownList1.DataBind();
        this.DropDownList1.SelectedValue = "0";
    }

    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        string key = this.DropDownList1.SelectedValue.ToString();
        pppp = "Default.aspx?kk=" + key;
        //Response.Redirect("Default.aspx?kk=" + key);

    }

 

Default.aspx.cs代码:


public string address;
    //public static ImageFormat Jpeg { get; }
    public string pp;
    protected void Page_Load(object sender, EventArgs e)
    {
       
        if (!this.IsPostBack)
        {
            try{
          
                pp = Request["kk"].ToString();
            }
          catch
            {
                pp = "";
            }
            address = "img/123.tif";
            getImage(address);
        }
    }
    void getImage(string imgpath)//根据路径输出Jpeg格式图片流  
    {
        Bitmap bt = new Bitmap(Server.MapPath(imgpath));
       Guid gud=(Guid)bt.FrameDimensionsList.GetValue(0);
        FrameDimension fds=new FrameDimension(gud);
        //int totalPage=bt.GetFrameCount(fds);
        //this.Label1.Text = "共" + totalPage + "页";
      /* for (int i = 0; i < totalPage; i++)
        {
            bt.SelectActiveFrame(fds, i);

        }*/
        if (pp != ""
        {

            int qq = Convert.ToInt16(pp);
            bt.SelectActiveFrame(fds, qq);
        }

        MemoryStream ss = new MemoryStream();
        bt.Save(Server.MapPath("1.jpg", ImageFormat.Jpeg);
        bt.Save(ss, ImageFormat.Jpeg);
        byte[] bb = ss.GetBuffer();
        ss.Read(bb, 0, (int)ss.Length);
        //this.ID_img.ImageUrl =Convert.ToString(bb);
        Response.BinaryWrite(bb);
        ss.Close();
        bt.Dispose();
        Response.End();
    }

 

C#读取分割多页Tif文件
//分割Tif图片为多个Gif图片
1   Image img = Image.FromFile("C://1.tif");
2   Guid guid = (Guid)img.FrameDimensionsList.GetValue(0);
3   FrameDimension dimension = new FrameDimension(guid);
4   int totalPage = img.GetFrameCount(dimension);
5
6   this.statusBar1.Text = "共"+totalPage+"页";
7
8   for(int i=0;i<totalPage;i++)
9   {
10    img.SelectActiveFrame(dimension,i);
11                img.Save("C://Gif"+i+".gif",System.Drawing.Imaging.ImageFormat.Gif);
12   }
13

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