The coding language is C#3.0What is the most optimum method to retrieve all hashtable keys into string separated by a delimiter ","Is the for loop or the foreach loop the only option?
Update: the keys are already strings
I have a variable such as this string URL="http//:localhost, myhomepage";
how do I easily add the above into a hash table? With the url part being the key and the description being the value.
At debug time I would like to see what are the keys in my InitParams collection - I can't seem to be able to list them.
EDIT:As Jon suggests below, this might be a bug within the Silverlight debugger. To reproduce, just create a new Silverlight Application within Visual Studio 2010 and just edit code
{
public partial class MainPage : UserControl
{ [code]...
What is the difference between hash table and index table? can any one explain me briefly. Also send me the hashing techniques.
View 2 RepliesIs there a build in library in .NET that can compute secure one-way hash ? I mean a library that implements SHA-2 cryptographic hash function or something similar.
If is there is no SHA-2 implementation some weaker hash funcion would be sufficient. If there are more options I prefer the most secure one.
provide a use example e.g. provide the code that returns one-way hash for string mySampleString.
Hopefully someone knows a way to fix this issue, but here is my problem. I need to be able to recreate a md5 hash that will be the equivalent of the hash that php would generate.
The encoding I have tried is listed below. None of these will produce the same values.
UnicodeEncoding
UTF7Encoding
UTF8Encoding
UTF32Encoding
I have two pages:
1) login and send username,password, machineID and a rand string to the server
2) check the machineID whether it exists in the table.
Problem is the checking machine procedure:
select MachineID from computer where MD5MachineID=@MD5MachineID2 and SUBSTRING((master.dbo.fn_varbintohexstr(HASHBYTES('MD5',MachineID+@RString))),3,32)=@MIDST
RString,MD5MachineID2,MIDST are submited by Login MD5MachineID is stored in table.
I need the check if MD5(MachineID+RString) is match the MIDST (submited).
Now the situation is :
if RString is a fixed string(not a variable).like 'abcdefg', the MD5 is correct.
if I use the RString (submited value as a variable), the MD5 is incorrect.
DataContractJsonSerializer this is nice class added in the .net framework which can be used to serialize/desirealize object into JSON.
Now following is the example i am trying
[Serializable] class User { public string name; public string userId; }
Now following is the output generated
Output : Notice structure where only "name" is expected instead of k__BackingField
Now this is the problem after digging so much i am not sure from where <> and _BackingField is coming ?
{
"<name>k__BackingField":"test user",
"<userId>k__BackingField":100001}
Is aspnet_regiis.exe secure? If i encrypt using aspnet_regiis.exe, will it automatically decrypt the string and wont give any error? Need an insight into this stuff.... Is Rsa the best option or wat? Wat's the best way to encrypt/decrypt programmatically?
View 10 RepliesI have a DataGrid that I need to be able to use to delete records form a file
[Code]....
[Code]....
I use
((TextBox)GridMenuOptions.Rows[e.RowIndex].Cells[1].Controls[0]).Text;
To access the data in the Grid for updating, but it doesn't work for deleting
I can use
string id = GridMenuOptions.DataKeys[e.RowIndex].Value.ToString();
but that only returns the first key.
How do I access the rest of the keys?
I use Mysql database, in this i create two table A, B. table A column x and is FK of second table B's column m,n,o provide does it possible that x referncing to foreign key of table B columns m, n , and o all.
View 2 RepliesMy current project has many peripheral systems and many different environments (testing, integration, development etc). As expected, we're using .config files to dynamically manage everything.
Instead of updating each relavant key when deploying to an environment, I was hoping there was a way to change 1 key only. Such as:
<add key="Environment" value="Development"/>
<add key="WebServiceLocation" value="http://<<Environment>>/text.asmx"/>
I've done some searching and haven't come up with an elegant solution. I'm aware that .config files can make use of system variables, but this seems like a bit of a high wire act.
Using a very run-of-the-mill database, with identity int for primary keys, a Dynamic Data Entities Project (EntityFramework) displays the primary key for view and edit. When using Linq to Sql, the primary key fields are not displayed.
I would like to hide the primary keys and use Entity Framework (VS 2008, .Net 3.5 sp1).
Basically i deal with two tables.i have a table T1 of the following format:id company_name i need to read this data and create a table T2 as followsi wrote the following code. it worked fine for retrieving data and modification but fails to insert the modified data into the 2nd table.the error is, it does not recognise the value for @token
ArrayList dynarr=new ArrayList(); // global variable
protected void Button2_Click(object sender, EventArgs e)
{
int row = 1; int i;
string strcmd = null;
string Connection = "Data Source=....";
SqlConnection conn = new SqlConnection(Connection);
string str = "select company_name from T1 where ID=@ID";
[code]...
I am integrating openid in my website.I am able to retrieve data(ex email) from op provider(by query string).
But different op provider gives data in different key like gmail gives it under openid.ext1.value.alia2 key and yahoo gives it in under some different key.how should i retrieve value from query string.
What is wrong with this code?errors: string myname = dt.Rows[i][0]; - Cannot implicitly convert type 'object' to 'string'. An explicit conversion exists (are you missing a cast?)I tried the followingobject myname = dt.rows[i][0]; --if i use object instead of string, i had no errors.How do i retrieve the value from a datatable column into a string in c#?Error2 - if (Name = myname)Cannot implicitly convert type 'string' to 'bool'
[Code]....
how can i dissect or retrieve string values
Here's the sample code that im working on now
private void SplitStrings()
{
List<string> listvalues = new List<string>();
listvalues = (List<string>)Session["mylist"];[code]....
now that i'am able to retrieve List values in my session, how can i separately get the values of each list using foreach or for statement? what i want to happen is to programmatically split the values of the strings depending on how many is in the list.
A user can have many addresses, but I want to retrieve the latest entry for the user
In sql I would do:
SELECT TOP 1 *
FROM UserAddress
WHERE userID = @userID
How can I create a criteria query with the same logic?
I want to retrieve info from more than 1 table. I have tried to look into using the ViewModel but do not fully understand how to implement it. My Model is setup using ADO.Net framework.
View 1 RepliesI store string using , (comma) now i want to retrieve data back from the comapre string in another with the price.
I store string like this a,b,c,d.
Now i want to retrive it like
name price
a 10
b 20
c 30
totla 60
using ms access databse and .net C#
What is the preferred way to retrieve large(approx: 50 MB) xml string from ASP.NET webpage?
Placing the xml string in file and downloading the file is not a choice.(This should be my last resort if nothing else works)
I have following method on ASP.NET server which is exposed through WCF service to silverlight client.
[code]...
Unfortunately these xml strings are approximately 50MB to 100 MB. Silverlight client needs to retrive these large strings and store it in a file on the client machine at the path selected by the user through saveFileDialog.
My concern is WCF service will not allow such large messages. How can I address this issue?
I´m having a code making some txt-files out of a query for each af a dropdownlist.
I need to name the the output file to a name including the distinct data of a column in my query.
[Code]....
The output file name should include the data from the query of agent_input36. It could be several data.
I´m trying to make an order file. The orderfile name (.txt) should include the possible names of agent_input36. It could look like. YYY_"agent_input36"_Order_"Date"_CCC.txt. Can I retrieve the data of this column from a sqlDataAdapter into a stringvalue?
I have an app that connects to only one db for all of the data that the app has access to. My connection string is in the Web.Config file. In each of my DAL classes I have the following code that gets the connection string from the Config file. This works with no issues but I thought there might be a better way of doing this that I don't know.
If I wanted to change the name of the connection string that any of the DAL classes would use then I would have to change the name of the connection string in each of the files. I thought about creating a new class that would hold this then I could just instantiate a new instance of the class to access this with each of the DAL classes that needs access to it. Then if I needed to change the name of the connection string then it would only be in one place. I suspect there is an even better way of doing this that i don't know about.
[Code]....
Is there a command to retrieve the whole string after the question mark (?) in a URL?
For instance, if I have www.joesmith.com/Test.aspx?price=10.00&name=bob&zip=38924, I want to be able to get the part of the string that says, price=10.00&name=bob&zip=38924
if i have url in string format like
"redirect.aspx?id=1 &name=n1 &add=abc"
is there sum in built function in asp.net to retrieve querystring values from this considering this as url.
