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iserbrain wrote:
Subject: How to using webcam for live video on asp.net website ?
ASP.NET has nothing to do with Web Cam integration
Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
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This is very rude to delete message
Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
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Hi Guys,
I am working on a website and trying to create a web page with file uploader which can upload any type of file to the server.
Please help me with sample code.
Working on ASP.NET VisualStudio2008.
Thanks
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Add
<asp:FileUpload ID="fuFile" runat="server" /> to you aspx page and a button.
the button "click event" code should look like this:
fuFile.SaveAs(Server.MapPath("~/folder/filename"))
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string StrFileName = File1.PostedFile.FileName.Substring(File1.PostedFile.FileName.LastIndexOf("\\") + 1, File1.PostedFile.FileName.Length - File1.PostedFile.FileName.LastIndexOf("\\") - 1);
string StrFileType = File1.PostedFile.ContentType;
int IntFileSize = File1.PostedFile.ContentLength;
I am using this code...but its generating error..
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Sr...Frank wrote: string StrFileName = File1.PostedFile.FileName.Substring(File1.PostedFile.FileName.LastIndexOf("\\") + 1, File1.PostedFile.FileName.Length - File1.PostedFile.FileName.LastIndexOf("\\") - 1);
string StrFileType = File1.PostedFile.ContentType;
int IntFileSize = File1.PostedFile.ContentLength;
Just use only
File1.SaveAs();
Sr...Frank wrote: I am using this code...but its generating error..
What error you are getting ?
Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
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You also have to add premmisions to that folder where you store the file
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Blikkies wrote: You also have to add premmisions to that folder where you store the file
Yes, This is only needed when you deploy the application on IIS Server. Its not mandatory for when we are doing it for Visual Studio.
Because, In Visual Studio, ASP.NET Engine having all kind of permssion to write on your harddrive. But, when you put the applicaiton on IIS, the application will run on Network Service Identity . Which having very minimum permission rights , and not to write on disk.
So we can have two solution,
a) Give the write access to all the user for that particular folder where we are uploding the file.
b) Make a different application pool with Identity of Local System ( which having write access permission) and assign it to the virtual directiry.
Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
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Use FileUpload Control
Try to uplaod file using,
If(FileUpload1.HasFile)
{
FileUpload1.SaveAs(path);
}
This code will work fine when you run your application from VS IDE . but when you deploy your code on IIS, you need to give the Access permission to the folder for user to upload file or you need to create a separate application pool for your site with Local System Identity .
Please let me know if you have any issue .
Thanks !
Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
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Hi ,
i have created a user control numberbox which is working fine .
But i want set the property value from aspx.cs file dynamically which is not possible . it is taking the value from toolboxdata table only even though i set the property in page load.
numberbox code:
using System.Collections.Generic;
using System.Text;
using System;
using System.Web.UI;
using System.ComponentModel;
using System.Web.UI.WebControls;
using System.Text.RegularExpressions;
namespace ERP.Controls
{
[
ToolboxData("<{0}:NumBox runat=server></{0}:NumBox>"),
DefaultProperty("DecimalPlaces")
]
public class NumBox : TextBox
{
private int mDecimalPlaces = 0;
private char mDecimalSymbol = '.';
private bool mAllowNegatives = true;
[
Bindable(true),
Category("Appearance"),
DefaultValue(typeof(int), "2"),
Description("Indicates the number of decimal places to display.")
]
public virtual int DecimalPlaces
{
get { return mDecimalPlaces; }
set { mDecimalPlaces = value; }
}
[
Bindable(true),
Category("Appearance"),
DefaultValue("."),
Description("The digit grouping symbol.")
]
public virtual char DecimalSymbol
{
get { return mDecimalSymbol; }
set { mDecimalSymbol = value; }
}
[
Bindable(true),
Category("Appearance"),
DefaultValue(true),
Description("True when negative values are allowed")
]
public virtual bool AllowNegatives
{
get { return mAllowNegatives; }
set { mAllowNegatives = value; }
}
[
Bindable(true),
Category("Appearance"),
DefaultValue(0),
Description("Indicates the number of decimal places to display.")
]
public virtual double Value
{
get
{
try
{
return ParseStringToDouble(this.Text);
}
catch (FormatException e)
{
throw new
InvalidOperationException("NumberBox does not contain a valid Number.");
}
catch (Exception e)
{
throw e;
}
}
set
{
if ((value < 0) & !AllowNegatives)
throw new
ArgumentOutOfRangeException("Only positive values are allowed for this NumberBox");
base.Text = value.ToString(GetFormat()).Replace(".", DecimalSymbol.ToString());
}
}
override public string Text
{
get
{
return base.Text;
}
set
{
try
{
this.Value = ParseStringToDouble(value);
}
catch (FormatException e)
{
base.Text = value;
}
catch (Exception e)
{
throw e;
}
}
}
override protected void OnPreRender(EventArgs e)
{
if (this.Page.Request.Browser.JavaScript == true)
{
StringBuilder s = new StringBuilder();
s.Append("\n<script type='text/javascript' language='JavaScript'>\n");
s.Append("<!--\n");
s.Append(" function NumberBoxKeyPress(event, dp, ml, dc, n) {\n");
s.Append("var srcElement = event.srcElement ? event.srcElement : event.target;\n");
s.Append(" var myString = new String(srcElement.value);\n");
s.Append(" var pntPos = myString.indexOf(String.fromCharCode(dc));\n");
s.Append(" np=ml-dp-1;\n");
s.Append(" var obid = srcElement.id ;\n");
s.Append("var keyChar = event.which;\n");
s.Append("if (keyChar == null){\n");
s.Append("keyChar = event.keyCode; }\n");
s.Append("var r;\n");
s.Append("var Curpos=-1;\n");
s.Append("Curpos = srcElement.selectionStart;\n");
s.Append("if (Curpos!=-1){\n");
s.Append("if( document.selection ) { \n");
s.Append(" r = document.selection.createRange();\n");
s.Append("r.moveStart('character', -myString.length); \n");
s.Append("Curpos =r.text.length;}}\n");
s.Append(" if ((keyChar < 48) || (keyChar > 57) ) {\n");
s.Append(" if (keyChar == dc) {\n");
s.Append(" if ((pntPos != -1) || (dp < 1)) {\n");
s.Append(" return false; \n");
s.Append(" } }\n");
s.Append("else \n");
s.Append("if ((keyChar == 8) || (keyChar == 0)){\n");
s.Append("return true;\n}");
s.Append(" else \n");
s.Append("if (((keyChar == 45) && (!n || myString.length != 0)) || (keyChar != 45)) \n");
s.Append(" return false;\n");
s.Append(" }\n");
s.Append(" else \n");
s.Append(" { if ( myString.length > np-1 && pntPos ==-1 ) { \n");
s.Append(" return false; } \n");
s.Append(" else if (pntPos!=-1){\n");
s.Append(" var dsubstring ; \n ");
s.Append(" var ssubstring ; \n ");
s.Append("ssubstring=myString.substring(0,pntPos); \n");
s.Append("dsubstring=myString.substring(pntPos+1); \n");
s.Append("if (dsubstring.length > dp-1 ){\n");
s.Append(" if( Curpos > pntPos){ return false;} } \n");
s.Append("if (ssubstring.length > np-1) { \n");
s.Append(" if(Curpos < np+1){ return false; }}\n");
s.Append("}}\n");
s.Append(" return true;\n");
s.Append(" }\n");
s.Append("// -->\n");
s.Append("</script>\n");
this.Page.RegisterClientScriptBlock("NumberBoxKeyPress", s.ToString());
try
{
this.Attributes.Remove("onKeyPress");
}
finally
{
this.Attributes.Add("onKeyPress", "return NumberBoxKeyPress(event, "
+ DecimalPlaces.ToString() + ", "
+ MaxLength.ToString() + ", "
+ ((int)DecimalSymbol).ToString() + ", "
+ AllowNegatives.ToString().ToLower() + ")");
}
}
}
virtual public string ValidationRegularExpression
{
get
{
StringBuilder regexp = new StringBuilder();
int NumberPlaces1 = MaxLength - DecimalPlaces - 1;
if (DecimalPlaces > 0)
{
regexp.Append("^\\d{1,");
regexp.Append(NumberPlaces1);
regexp.Append("}(\\");
regexp.Append(DecimalSymbol);
regexp.Append("\\d{1,");
regexp.Append(DecimalPlaces.ToString());
regexp.Append("})?$");
}
else
{
regexp.Append("^\\d{1,");
regexp.Append(NumberPlaces1);
regexp.Append("}$");
}
return regexp.ToString();
}
}
virtual protected double ParseStringToDouble(string s)
{
if (s == "")
{
s = "0";
}
s = s.Replace(DecimalSymbol.ToString(), ".");
return double.Parse(s);
}
virtual protected string GetFormat()
{
StringBuilder f = new StringBuilder();
f.Append("0");
if (DecimalPlaces > 0)
{
f.Append(".");
f.Append('0', DecimalPlaces);
}
return f.ToString();
}
}
}
In aspx page have added the control.
<rit:numberbox id="numOne" runat="server" DecimalSymbol="." MaxLength="8" Value="34" AutoPostBack="True" DecimalPlaces="3" CausesValidation="True" >34.00</rit:numberbox>
and in cs file have given in page load :
protected void Page_Load(object sender, System.EventArgs e)
{
numOne.DecimalPlaces = 4;
}
which is not been set. i.e the property value is not able to set dynamically .
i.e from cs file . it is taking the value set initially not overridded.
please help in this regard.
Thanks and Regards,
sriharsha
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We don't need to see all of your code, only the relevant bits. Most will just ignore a post with this much code.
only two letters away from being an asset
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I think the value of the DecimalPlaces property is not stored in ViewState. You need to override LoadViewState and SaveViewState methods in the Custom Control.
modified on Wednesday, September 2, 2009 12:37 PM
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I guess too.
Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
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Hi,
I am having web application and windows application. Now I want to store all database tables information(server database) into the cache. I don't want any local database to store servers database. I want to use cache. Just like replica of the servers database These information can be access by windows application program. after updating cache information these information can be update to again web servers database.
How can I do? Is there any other solution so that I can use server database locally for some time , update some tables information to locally and the again update to servers database i.e. overwrite it to servers database only those which is updated locally.
Thanks
sjs4u
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Do you want to cache information locally using your windows application or web application?
You cannot cache replica of server database tables locally using web appliction.
You can use SQL Server 2005 Express Edition if you want to do it using Windows application.
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Thanks for the reply.
Well I am using windows application for getting cache data.
Update Cache data and then want to store that table on servers database which is updated locally.
Thanks
sjs4u
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This question STILL has nothing to do with ASP.NET. You have a windows program, and I expect you will have a webservice which will upload it's data to a server. There's no ASP.NET involved here, even if there's an ASP.NET website on the other end of all this code.
I would just write a webservice which takes data and runs it into the database, I wouldn't be passing a whole database through the web, I'd just do an update as needed.
Christian Graus
Driven to the arms of OSX by Vista.
Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.
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With Javascript how do I set the focus to Text2 in ctl00_ContentPlaceHolder1_TimeEntryBox2_Panel1?
<div id="ctl00_ContentPlaceHolder1_TimeEntryBox1_Panel1" style="border-color:#7F9DB9;border-width:1px;border-style:Solid;width:89px;">
<input id="Text2" name="Text2" type="text" onkeyup="TimeEntryMinutesOnClick(this)" onblur="TimeEntryMinutesOnBlur(this)" style="border: 0px none #FFFFFF; width: 12px" maxlength="2" />
<input type="hidden" id="ctrlPrefix" name="ctrlPrefix" value='ctl00_ContentPlaceHolder1_TimeEntryBox1_'>
</div>
<div id="ctl00_ContentPlaceHolder1_TimeEntryBox2_Panel1" style="border-color:#7F9DB9;border-width:1px;border-style:Solid;width:89px;">
<input id="Text2" name="Text2" type="text" onkeyup="TimeEntryMinutesOnClick(this)" onblur="TimeEntryMinutesOnBlur(this)" style="border: 0px none #FFFFFF; width: 12px" maxlength="2" />
<input type="hidden" id="ctrlPrefix" name="ctrlPrefix" value='ctl00_ContentPlaceHolder1_TimeEntryBox2_'>
</div>
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I am the voice of inexperience but I'm pretty sure it's bad practice to have more than 1 control on the page with the same ID. Can't you give each control a unique ID and use Javascript's .Focus method?
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The HTML is coming from a User Control. Two of the same User Control are on the page. When viewing the source from the browser this is what it looks like.
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If you have the source code you can chaneg the ID with meaning full name or use the ID that you are getting from ViewSource for focusing.
Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
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Just find the ID of the control using GetElementByID method and use ControlObject.Focus() method to set the foucs.
Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
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But he has 2 controls with the same ID. Will this approach still work?
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Liqz wrote: But he has 2 controls with the same ID.
Why ? It should not be.
Or you can first run the application, from view Source what exact ID is generating for that page control then use Control.Focus(). This will work.
But this is not a good approch.
Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
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