Check if any input element has a value in a div/form using jQuery
function fnCheckInputHasValue()
{
var isvalpresent = false;
$("div#mydiv").find(":input").each(function () {
var type = $(this).attr("type");
//alert(type);
var $this = $(this);
if ($this.is("input")) {
if (type == "text") {
var val = $(this).val().trim();
if (val != "") {
isvalpresent = true;
}
}
//
if (type == "checkbox") {
if ($(this).is(":checked")) {
isvalpresent = true;
}
}
//
if (type == "radio") {
if ($(this).is(":checked")) {
isvalpresent = true;
}
}
}
//
if ($this.is("select")) {
var val = $(this).val().trim();
if (val != "" && val != "Select") {
isvalpresent = true;
}
}
//
if ($this.is("textarea")) {
var val = $(this).val().trim();
if (val != "") {
isvalpresent = true;
}
}
});
if (isvalpresent == false) {
// code
}
}
The code will resize an image to a fixed size image without loosing its quality. Helpful when we want to generate thumbnails.
// Resize image to generate thumbnails
public static void ResizeAndSaveImage(string filePathName, Image image, int Width, int Height, bool needToFill)
{
Bitmap bmpThumb = null;
try
{
int sourceWidth = image.Width;
int sourceHeight = image.Height;
int sourceX = 0;
int sourceY = 0;
double destX = 0;
double destY = 0;
double nScale = 0;
double nScaleW = 0;
double nScaleH = 0;
nScaleW = ((double)Width / (double)sourceWidth);
nScaleH = ((double)Height / (double)sourceHeight);
if (!needToFill)
{
nScale = Math.Min(nScaleH, nScaleW);
}
else
{
nScale = Math.Max(nScaleH, nScaleW);
destY = (Height - sourceHeight * nScale) / 2;
destX = (Width - sourceWidth * nScale) / 2;
}
if (nScale > 1)
nScale = 1;
int destWidth = (int)Math.Round(sourceWidth * nScale);
int destHeight = (int)Math.Round(sourceHeight * nScale);
bmpThumb = new Bitmap(destWidth + (int)Math.Round(2 * destX), destHeight + (int)Math.Round(2 * destY));
using (Graphics graphic = Graphics.FromImage(bmpThumb))
{
graphic.Clear(Color.White);
graphic.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphic.SmoothingMode = SmoothingMode.HighQuality;
graphic.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphic.CompositingQuality = CompositingQuality.HighQuality;
Rectangle to = new System.Drawing.Rectangle((int)Math.Round(destX),
(int)Math.Round(destY), destWidth, destHeight);
Rectangle from = new System.Drawing.Rectangle(sourceX, sourceY, sourceWidth, sourceHeight);
graphic.DrawImage(image, to, from, System.Drawing.GraphicsUnit.Pixel);
image = bmpThumb;
image.Save(filePathName, ImageFormat.Jpeg);
}
}
catch
{
if (bmpThumb != null) bmpThumb.Dispose();
throw;
}
}