Web Forms :: How To Check For File Exists On Another Website
Jul 29, 2010
I have two websites. One site contains nothing but image files. This is a sub-domain of the main website. The main website allows the user to search a database of information and displays that information. I create a grid with a link to the file. In my row_databound function, I want to check to see if that file exists on my other website. If it doesn't I remove the link, otherwise I leaves a link to that file. how to verify that the LINK actually goes to a file that exists?
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Dec 15, 2010
I am trying to check if a file already exists before uploading a file. I have the following code but it doesn't work whether the file exists or not.
[Code]....
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Dec 7, 2010
What is the way to :
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Sep 20, 2015
I am learning a tutorial, it is about saving mp3 files in database.
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[URL] ...
protected void btnUpload_Click(object sender, EventArgs e)
{
using (BinaryReader br = new BinaryReader(FileUpload1.PostedFile.InputStream))
{
byte[] bytes = br.ReadBytes((int)FileUpload1.PostedFile.InputStream.Length);
string strConnString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
[Code] .....
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Jan 4, 2010
I'd like to use a simple switch to display one image or another but I need a way to find out if the image exists.
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Dec 25, 2010
How to check if a file exists on different domain?
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Feb 5, 2010
I need to check if a text file exists on a site on a different domain. The URL could be:
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May 18, 2010
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Jan 6, 2010
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Jan 24, 2011
I have some data that I am putting on a treeview and have a checkbox on the page to decide if the user wants to order the nodes by date or type.
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etc etc etc
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May 27, 2010
Using C#.NET and VWD 2008 Express
I'm looking for a hand with:
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Nov 9, 2010
I have a function that loops through the control on my page to set attributes. This works fine, except that I only want the attributes to bet set on the controls on the content page, and not on the master page. Is it possible to check where the control resides? Or to only loop through controls on the content page?
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Jul 30, 2012
In this article u describe how to check
[URL]
But I want to Data retrive from data base in this way can u tell me using java script and query string
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Jul 26, 2010
I tried to illustrate the problem by providing the following instructions, unfortunately the data was deleted and the example failed. It is now working. I have been working through one of Scott Mitchells ASP.NET Application Tutorials Title "Using TemplateFields in the GridView Control"
The URL is ...
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May 22, 2010
i am building a project using C# Asp.Net in which i am registering users with a user id, now my question is that how to check that the user id is already exists in the user table or not when user trying to register, i am using sql server 2000?
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Mar 20, 2011
i have two datatable, while adding rows in second datatable, i want to first check whether the id in the second datatable matches as in the first datatable, if not only then it should be added in the second datatable, else it should display a message...
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May 22, 2010
I am a beginner coder, i am building a project using C# Asp.Net in which i am registering users with a user id, now my question is that how to check that the user id is already exists in the user table or not when user trying to register, i am using sql server 2000?
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Dec 18, 2010
How do, to see if an object exists? For example, I want to see if there is a DropDown on the page. I tried this:
if (object != null) {}
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Dec 21, 2010
I am very new to this and have watched a lot of the videos. While trying out VWD2010 and SQL2008 Express, I come across many things, I just don't know how to do. Here is the latest:
I have a Table
UserId - Int - AutoIncrement
FirstName - Var(10)
LastName - Var(10)
I also have an ASP web page that allow the user to enter a first name and last name. It also has a button to submit. What I would like to do is have a Select statement check to see if the name already exists, then send a comment back to the user via a label. If it doesn't exist, then I would like to Insert the info and then again inform the user via label.
SelectCommand="SELECT COUNT (UserId) FROM Users WHERE ((FirstName=@FirstName) and (LastName=@LastName))"
InsertCommand="INSERT INTO User(LastName, FirstName) VALUES (@FirstName, @LastName)"
<InsertParameters>
<asp:ControlParameter ControlID="tbFirstName" Name="FirstName"
PropertyName="Text" Type="String" />
<asp:ControlParameter ControlID="tbLastName" Name="LastName"
PropertyName="Text" Type="String" />
</InsertParameters>
<SelectParameters>
<asp:ControlParameter ControlID="tbFirstName" Name="FirstName"
PropertyName="Text" Type="String" />
<asp:ControlParameter ControlID="tbLastName" Name="LastName"
PropertyName="Text" Type="String" />
</SelectParameters>
On the code behind, I get lost. (Obviously this doesn't work, but I don't know how to go about getting a results back. Protected Sub bSubmit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles bSubmit.Click
SqlDataSource1.Select(DataSourceSelectArguments.Empty)
(get a return)
(check return value, if <>0 then
lblResults.Text = "exists!"
else
SqlDataSource1.Insert()
lblResults.Text="added!"
end if)
End Sub
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