Step 1: Create
Webpage and Drag and Drop File Upload, Button, Image, Drop down Controls in your
Webpage and Design Like Below.
<div
style='float: left; width: 550px; overflow-y: auto; height: 100px; border: 1px
solid black;'>
<div>
Upload an Image:<asp:FileUpload ID="FileUpload1"
runat="server"
/>
<asp:Button ID="btnUpload"
runat="server"
Text="Upload"
OnClick="btnUpload_Click"
/>
<br />
<asp:DropDownList ID="ddlRotateAndFlip" runat="server" AutoPostBack="True"
OnSelectedIndexChanged="ddlRotateAndFlip_SelectedIndexChanged">
<asp:ListItem Value="--Select Rotation And Flip Option--">--Select
Rotation And Flip Option--</asp:ListItem>
<asp:ListItem>Rotates
180 degree Clockwise but not flip the image</asp:ListItem>
<asp:ListItem>Rotate
180 degree Clockwise with a horizontal flip</asp:ListItem>
<asp:ListItem>Rotate
180 degree Clockwise with a horizontal flip and vertical flip</asp:ListItem>
<asp:ListItem>Rotate
180 degree Clockwise with a vertical flip</asp:ListItem>
<asp:ListItem>Rotates
270 degree Clockwise but not flip the image</asp:ListItem>
<asp:ListItem>Rotate
270 degree Clockwise with a horizontal flip</asp:ListItem>
<asp:ListItem>Rotate
270 degree Clockwise with a horizontal flip and vertical flip</asp:ListItem>
<asp:ListItem>Rotate
270 degree Clockwise with a vertical flip</asp:ListItem>
<asp:ListItem>Rotates
90 degree Clockwise but not flip the image</asp:ListItem>
<asp:ListItem>Rotate
90 degree Clockwise with a horizontal flip</asp:ListItem>
<asp:ListItem>Rotate
90 degree Clockwise with a horizontal flip and vertical flip</asp:ListItem>
<asp:ListItem>Rotate
270 degree Clockwise with a vertical flip</asp:ListItem>
<asp:ListItem>No
clockwise rotation and no flipping</asp:ListItem>
<asp:ListItem>No
clockwise rotation but horizontal flip</asp:ListItem>
<asp:ListItem>No
clockwise rotation but horizontal and vertical flip</asp:ListItem>
<asp:ListItem>No
clockwise rotation but vertical flip</asp:ListItem>
</asp:DropDownList>
<br />
<br />
<asp:Image ID="Img" runat="server" Height="238px" Width="396px" />
</div>
</div>
Step 2: Now Code For File Upload in Save in Folder in your Webpage.
Bitmap _current;
protected
void Page_Load(object
sender, EventArgs e)
{
if
(Session["filepath"] != null)
{
Img.ImageUrl = Session["filepath"].ToString();
_current = (Bitmap)Bitmap.FromFile(Server.MapPath(Session["filepath"].ToString()));
}
}
protected
void btnUpload_Click(object
sender, EventArgs e)
{
if
(FileUpload1.HasFile)
{
string
filePath = Server.MapPath("Images/"
+ FileUpload1.FileName);
FileUpload1.SaveAs(filePath);
Img.ImageUrl = "Images/" + FileUpload1.FileName;
Session["filepath"] = "Images/"
+ FileUpload1.FileName;
}
else
{
Response.Write("Please Select The File");
}
}
Step 3: Now Create Drop down Selection Change in Code For Rotation in C#.
protected void ddlRotateAndFlip_SelectedIndexChanged(object sender, EventArgs
e)
{
Bitmap
temp = (Bitmap)_current;
Bitmap
bmap = (Bitmap)temp.Clone();
if
(ddlRotateAndFlip.SelectedIndex == 1)
{
bmap.RotateFlip(RotateFlipType.Rotate180FlipNone);
}
else
if (ddlRotateAndFlip.SelectedIndex == 2)
{
bmap.RotateFlip(RotateFlipType.Rotate180FlipX);
}
else
if (ddlRotateAndFlip.SelectedIndex == 3)
{
bmap.RotateFlip(RotateFlipType.Rotate180FlipXY);
}
else
if (ddlRotateAndFlip.SelectedIndex == 4)
{
bmap.RotateFlip(RotateFlipType.Rotate180FlipY);
}
else
if (ddlRotateAndFlip.SelectedIndex == 5)
{
bmap.RotateFlip(RotateFlipType.Rotate270FlipNone);
}
else
if (ddlRotateAndFlip.SelectedIndex == 6)
{
bmap.RotateFlip(RotateFlipType.Rotate270FlipX);
}
else
if (ddlRotateAndFlip.SelectedIndex == 7)
{
bmap.RotateFlip(RotateFlipType.Rotate270FlipXY);
}
else
if (ddlRotateAndFlip.SelectedIndex == 8)
{
bmap.RotateFlip(RotateFlipType.Rotate270FlipY);
}
else
if (ddlRotateAndFlip.SelectedIndex == 9)
{
bmap.RotateFlip(RotateFlipType.Rotate90FlipNone);
}
else
if (ddlRotateAndFlip.SelectedIndex == 10)
{
bmap.RotateFlip(RotateFlipType.Rotate90FlipX);
}
else
if (ddlRotateAndFlip.SelectedIndex == 11)
{
bmap.RotateFlip(RotateFlipType.Rotate90FlipXY);
}
else
if (ddlRotateAndFlip.SelectedIndex == 12)
{
bmap.RotateFlip(RotateFlipType.Rotate90FlipY);
}
else
if (ddlRotateAndFlip.SelectedIndex == 13)
{
bmap.RotateFlip(RotateFlipType.RotateNoneFlipNone);
}
else
if (ddlRotateAndFlip.SelectedIndex == 14)
{
bmap.RotateFlip(RotateFlipType.RotateNoneFlipX);
}
else
if (ddlRotateAndFlip.SelectedIndex == 15)
{
bmap.RotateFlip(RotateFlipType.RotateNoneFlipXY);
}
else
if (ddlRotateAndFlip.SelectedIndex == 16)
{
bmap.RotateFlip(RotateFlipType.RotateNoneFlipY);
}
else
{
//
Response.Write("<script>alert('Invalid
Selection')</script>");
}
_current = (Bitmap)bmap.Clone();
Random
rnd = new Random();
int
a = rnd.Next();
_current.Save(Server.MapPath("Images/" + a + ".png"));
Img.ImageUrl = "Images/" + a + ".png";
}
Step 4: Now run your Webpage and upload File and Select Option from Dropdown and See Image its Rotating.
Thanks for comments.....