I got the client Id of dropdown value as
ctl00_TimecardContentPlaceHolder_UC_0_1_drpdwnCompany
I have get the value from above string value as 1 only from that client Id.
Any methods like substring() are there to get that value specifically from that string.
Solution
GetClientIdFromConrol(Control control)
{
string strId=control.ClientID;
string strClientsId = strId.Substring(38, 1);
return Convert.ToInt32(strClientsId);
}
If you want to get only 1.
you can use split function to do that job.
string dropdown="ctl00_TimecardContentPlaceHolder_UC_0_1_drpdwnCompany";
string[] split=dropdown.split('_');//split by underscore character;
string result=split[4].ToString(); // Here you will get 1 to the result
Hope this helps.
Use ID not ClientID.
Also seeControl.ClientIDMode Property
Related
Suppose We are on the page www.abc.com/apple-store
then how to get string apple-store in asp C# code.
to store into another variable.
You can use string.last() to extract it.
string lastPartUrl =HttpContext.Current.Request.Url.AbsoluteUri.Split('/').Last();
You should use the Request.RawUrl property. See more details here.
Alternatelly you can also use the Request.Url (see here) property to get different parts of the current URL. For example you will get the same result using Request.Url.LocalPath.
You can get the url in a string variable. Further you can implement the below logic which will save the value in a variable.
string str = "www.abc.com/apple-store";
string result = "";
int i= 0;
int len = str.Length;
//Get the index of the character
i = str.IndexOf('/');
//store the result in the variable
result = str.Substring(i+1,len-i-1);
Console.WriteLine("Resultant:- {0}", result);`
Hope this helps a bit.
i have question about query string in asp.net:
standart query string with query string parameter is "www.mysity.url?key1=value1&key2=value2", but i need only check has query string key or not...yes, one of the correct decisions: www.mysite.url?reset=true, but this excess syntax for me.
in markup i use something like "<a href='UrlHelper.GetResetUrl()'>Reset</a>", this method return "www.mysity.url?reset", but in user side markup i have "Reset"
If you do not specify the name for a parameter it is taken as null.
Its value would be reset
So you would have to check it as follows:
if(Request.QueryString[null]=="reset")
{
//Take some reset action
}
a Quick and dirty solution is:
if(Request.Url.Query.Contains("?reset"))
{
// ok we have a reset
}
Assuming that you have a standard reset call ask as: www.mysity.url?reset and the reset url not have other parameters. If you have you can simple check for the reset keyword.
This code HttpContext.Current.Request["reset"] is always return null, so the next best thing if you like to make it hard, is to manual analyze your keys after the url.
All code that handles querystring parameters should be case insensitive. Browsers (or parts of internet infrastructure?) may convert the case.
One way to check if reset parameter is present in querystring:
bool reset = Request.Url.Query.IndexOf("reset", StringComparison.CurrentCultureIgnoreCase) > -1;
I am working with VB in asp.net,
The basic problem is, I want to pair up the elements in a string, exactly like request.QueryString() will do to the elements in the query string of the web page.
However instead of the function looking at the current webpage query string I want it to look at a string (that is in the exact form of a query string) stored as a variable.
So if I define a string such as:
Dim LooksLikeAQueryString As String = "?category1=answer1&category2=answer2"
I want a function that if I input LooksLikeAQueryString and "category1" it outputs "answer1" etc.
Is there anything that can already do this or do I have to build my own function? If I have to build my own, any tips?
I should add that in this case I won't be able to append the string to the url and then run request.QueryString.
You can use the HttpUtility.ParseQueryString method - MSDN link
ParseQueryString will do it for you - something along these lines:
Private Function QueryStringValue(queryString As String, key As String) As String
Dim qscoll As NameValueCollection = HttpUtility.ParseQueryString(queryString)
For Each s As String In qscoll.AllKeys
If s = key Then Return qscoll(s)
Next
Return Nothing
End Function
Usage:
Dim LooksLikeAQueryString As String = "?category1=answer1&category2=answer2"
Response.Write(QueryStringValue(LooksLikeAQueryString, "category2"))
If you dont want the dependancy of System.Web, of the top of my head
public string GetValue(string fakeQueryString,string key)
{
return fakeQueryString.Replace("?",String.Empty).Split('&')
.FirstOrDefault(item=>item.Split('=')[0] == key);
}
I have a function that has this line:
var returnString:String = items[0].#month;
#month is an attibute on an XML node like so:
<xmlnode month="JAN"/>
OK but I need to abstract the attribute name so I can pass a string to the function and get the contents of the attribute with the name matching the string I passed. So for example If I call the function like this function("stone") it returns items[0].#stone. I hope this is clear.
Does anyone know how to do what I am after?
Thanks.
You'll want to use attribute('stone') rather than #stone, its the same thing, #stone is just a shorthand way of writing it.
You can write this as:
var attrName:String = "month";
return items[0].#[ attrName ];
not only that, but if you ever want to assign a value to an attribute using a variable for the attribute name, you can do this (although it is not documented) like so:
public function setAttr(obj:XML, attrName:String, value:String):void{
obj.#[attrName] = value;
}
Is there a way to get an ASP.NET textbox to accept only currency values, and when the control is validated, insert a $ sign beforehand?
Examples:
10.23 becomes $10.23
$1.45 stays $1.45
10.a raises error due to not being a valid number
I have a RegularExpressionValidator that is verifying the number is valid, but I don't know how to force the $ sign into the text. I suspect JavaScript might work, but was wondering if there was another way to do this.
The ASP.NET MaskedEdit control from the AJAX Control Toolkit can accomplish what you're asking for.
I know an answer has already been accepted, but I wanted to throw out another solution for anyone with the same problem and looking for multiple workarounds.
The way I do this is to use jQuery format currency plugin to bind user input on the client side. Parsing this input on the server side only requires:
// directive
using System.Globalization;
// code
decimal input = -1;
if (decimal.TryParse(txtUserInput.Text, NumberStyles.Currency,
CultureInfo.InvariantCulture, out input))
{
parameter = input.ToString();
}
The only downfall to this is that the user can have javascript turned off, in which case the RegEx validator running server-side would work as a fall-back. If the control is databound, all you have to do is decimalValue.ToString("{0:c}") , as mentioned by others, in order to display the proper currency formatting.
The cool thing about this is that if the user enters the textbox and it shows $0.00 on the client side, the server-side if statement would return false. If your decimal value isn't nullable in the database, just change decimal input = -1 to decimal input = 0 and you'll have a default value of 0.
Another way to do this might be to place the dollar sign outside to the left of the text box. Is there a real need to have the dollar sign inside of the box or will a simple label do?
decimal sValue = decimal.Parse(txtboxValue.Text.Trim());
// Put Code to check whether the $ sign already exist or not.
//Try making a function returning boolean
//if Dollar sign not available do this
{ string LableText = string.Format("{0:c}", sValue); }
else
{ string LableText = Convert.ToString(sValue); }
string sValue = Convert.ToString(txtboxValue.Text.Trim());
// Put Code to check whether the $ sign already exist or not.
//Try making a function returning boolean
//if Dollar sign not available do this
{ string LableText = string.Format("{0:c}", "sValue"); }
else
{ string LableText = Convert.ToString(sValue); }
In the .CS you could do a pattern match along the lines of,
string value = text_box_to_validate.Text;
string myPattern = #"^\$(\d{1,3},?(\d{3},?)*\d{3}(\.\d{0,2})|\d{1,3}(\.\d{2})|\.\d{2})$";
Regex r = new Regex(myPattern);
Match m = r.Match(value);
if (m.Success)
{
//do something -- everything passed
}
else
{
//did not match
//could check if number is good, but is just missing $ in front
}