How To Pass Null To A Nullable Parameter Of A .NET Web Service Method Via Javascript

Aug 24, 2010

[System.Web.Script.Services.ScriptService]
public class Quotes : System.Web.Services.WebService
{
ebMethod]
public void Calculate(int param1, int? param2)

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How to pass parameter to c# method calling in javascript.

My code is like this .

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Pass Parameter To Nullable DateTime Field

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I have a textbox that I use to gather a date.  I would like to have the database store a null if this field is left blank by the user when submitting. I am using the following on my aspx page:

<div class="col-md-3">
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<asp:TextBox ID="sub_tdi_dt" runat="server" Enabled="true"></asp:TextBox>
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C# - How To Pass In A Method Name As A Parameter

Dec 10, 2010

I've just noticed I'm repeating a lot of C# code in my ASP.NET application so want to create a generic method. I have a series of private methods like this:

[Code]....

So, I want to replace DB.MyRepeatedCall, chtMyRepeatedChart and pass them in as parameters to a generic function. Is that possible? I have many charts on my form that take the same number of parameters.

UPDATE

Following Frederik's solution I have done this:

[Code]....

I am calling the function with this command:

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I get this error in the intellisense:

No overload for method 'GetAccountBalances' takes 0 arguments.

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I have an ActionResult Method defined as following;

[Code]....

I am using JQuery and would like to know how I call this method passing a parameter. I have the following which does not work;

[Code]....

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[Code]....

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How To Pass Parameter Back From Web Service If An Insert To A Database Successfull

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I have a web form and I use jQuery/AJAX/JASON to send objects to a web service using

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is there a way to get this ID back to the web form and use this in a variable?

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[System.Web.Script.Services.
ScriptService]
public
class
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ItemMainHeadMsts objItemMainHeadMsts;
DatabaseHelper objDataHelper;
[WebMethod]
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{
List<string>
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objItemMainHeadMsts =
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objItemMainHeadMsts =
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foreach (ItemMainHeadMst
mainHead in
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return
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Pass Parameter As Text To JavaScript Function From Code Behind

Mar 23, 2010

Basically, I have a gridview that is opened in a new window from the parent window. It has a bunch of records with a view button to view the details of each record (which stays in the same newly opened window). I have a calendar in the parent window that accepts a Date querystring parameter to set the current date on the calendar at page load. I'm just trying to refresh the calendar in the parent window to match the date of the label in the newly opened window. All the code below is in the newly opened window. The .Net code-behind below refers to when that view button is clicked and everything is populated. At the end, I call the js to refresh the parent window and pass the value of the LabelScheduleDate as the querystring parameter. Now the label comes through as '03/25/2010' in the code-behind, but when I pass it to the js, it comes through as '0.00005970149253731343' in the end querystring. I'm not really sure what is making the value change, and I want to pass it as just text. Do I need to pass it as a string object? I tried but I don't think I was doing it right.

JavaScript Function
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}
.NET Code-Behind
Protected Sub RadGridOnlineRequests_ItemCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) Handles RadGridOnlineRequests.ItemCommand
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ScriptManager.RegisterStartupScript( _
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Pass Eval As Javascript Function Parameter In Gridview?

Jun 25, 2010

I have the following:

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UPDATE:

I tried by removing the single quotes from insode the <% %> tags. Which gave me this:

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AJAX :: How To Find Javascript Method Returns Null

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[Code]....

If I use $get, it does work as the expected functionality for $get. It is only $find that does not work.
Can anyone explain the problem?

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C# Null Syntax - How To Set A Field To Be Nullable

Feb 6, 2011

I remember being told that you can add some syntax to the end of a statement that will do something if the field is null. Pretty vague, but I cant seem to find anything about it via google.

I definitely isnt how to set a field to be nullable. I know that.

Here is an example of what I want.

int? field1 = 0;

field1 = int.parse(string2); (where string2 is a passed value, that could be null)

I thought there was something you could put at ?? if it is a null, such as:

field1 = int.parse(string2) ??;

Or do I have to check every if every string2 is null before making that statement.

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Pass Variables To Javascript Method From Code Behind

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I am calling a javascript function from .cs file which is as below:

private string CallValuesScript()
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sb.AppendLine(" });");
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I have two integers declared at class level private int ratingLinkId = 0 ;

private int ratingValue = 0;

how I can pass these two integer values to the function "DisplayValues();" ? I have the javascript function is aspx as below:

function DisplayRatings(id, count) {
//code
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MVC :: System.Nullable Doesn't Accept (int?) Null?

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My designer.cs file of all the SQL tables is generated by LINQ-TO-SQL. The class and attribute in question is like this.

[global::System.Data.Linq.Mapping.TableAttribute(Name="dbo.Transfers")]
public
partial
class
Transfer :INotifyPropertyChanging,[code]...

I need to assign a null to the attribute so that the value 0 does not get save to the database.

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C# - Unable To Set A Nullable Int To Null In A Ternary If Statement?

May 4, 2010

The C# code below:

int? i;
i = (true ? null : 0);

gives me the error:

Type of conditional expression cannot be determined because there is no implicit conversion between '<null>' and 'int' Shouldn't this be valid?

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Nullable DateTime Parameter Never Bound When Calling Action

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I have the following function signuture:

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What is the right format?

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Got a nullable datetime member on my viewmodel.the moment it hit my controller action, the viewmodel's modelstate allready are invalid (because the member is null).Forgot...how that works? (using MVC2)Basically my viewmodel have a social security number, passport number and passport expiracy date.If the ssn is entered, I want to ignore the two passport related fields, so I made the expiracy date member nullable.

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Javascript - Pass Multiple Parameters To OnSuccess Method Of PageMethod?

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I'm calling PageMethod "SameMethod" from javascript method "caller" so that I can get some values from DB. After I get values, control is continuing in "onSuccess" method. Problem is that I need to use some variable values ("importantValue") from javascript method "caller" in "onSuccess" method.


function caller(){
var importantValue = 1984;
PageMethod.SomeMethod(param1,..., onSuccess, onFailure)
}

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function onSuccess(pageMethodReturnValue, importantValue ){
}

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