Request Data From An Input Field In .NET?
Mar 17, 2011
Simple question. I have the following hidden input field on my ASP.NET page:
<form id="userform" method="post" action="RankingPage.aspx">
<input type="hidden" id="email" />
<input type="hidden" id="name" />
</form>
I'm trying to get the data from the field (in my code behind) like this:
protected void Page_Load(object sender, EventArgs e)
{
string name = Request.Form["name"].ToString();
}
It's returning a null reference (which I'm assuming means it couldn't find the field). Am I doing this wrong?
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Aug 24, 2010
I've tried to override error message when input incorrect data type in input field on HTML form.For example I have the model like this.
public class Person
{
public string FirstName {get;set;}
public int Age {get;set;}
}
For view, I put text input for Age to get it value.When type some string in Age text box like 'test' and press submit button.
I got this error message ,The value 'xxx' is not valid for AgeHowever, I want to change this message and try many way. There 's nothing effect this message value.
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Apr 1, 2011
I have a DetailsView on the page and I have made one of the fields a TemplateField. In the EditItemTemplate and InsertItemTemplate I have a DropdownList that is databound to a table in my Sql Server database. I wanted to add an initial value to the DropdownList
namely "- select -" .
I set the AppendDataBoundItems property to true and added the initial value as a ListItem.Markup of the DropdownList
<asp:DropDownList ID="DropDownList_HP" runat="server"
AppendDataBoundItems="True" DataSourceID="SqlDataSource_HP" [code]...
This works fine for new input. The problem is however that the database already has records that were entered through a Windows Application and many of these records has a null value in this field and exceptions are thrown when I tried to open these records
and the system tried to set the SelectedValue of the DropdownList.After some more searching I found this help
http://msdn.microsoft.com/en-us/library/ms366709.aspx
So I changed the ListItem in the DropDownList markup to the following:
<asp:DropDownList ID="DropDownList_RefHospDV4" runat="server"
AppendDataBoundItems="True" DataSourceID="SqlDataSource_RefHosp" [code]...
This now solved the problem of opening a record where the value is null in the database, BUT now the RequiredFieldValidator is not validating anymore to make sure that a databound item is selected for this field and not the initial value "- select -". So basically now it is not checking anymore to see if valid input has been entered for the DropDownList and it accepts "- select -" thus it acts as if the field is not a required field anymore.
In short what is required is that I want to make sure that the user enters a valid selection in the DropDownList, but it must also cater for old records that do not have this field entered yet so that those old records can be opened in the DetailsView .Opening Old records (with null in that field):When these old records are opened in the DetailsView the DropDownlist should show "- select -" when the value in the database is null.
Saving records (old or new records):When saving the record in Insert mode or Update mode the RequiredFieldValidator should show that a valid input is not selected if the DropDownList is still on "- select -".
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May 27, 2010
how can i generate rtf file based on input field(textbox input by user) c#
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Mar 6, 2010
when updating a decimal field in a GridView all is fine when using e.g. "2.3" ("." to separate the fraction!)
However, when using "2,3" I get e formatstring exception!
I tried "regularExpressionValidator/RequiredFieldvalidator" but did not succeed! Tried also with FormatString like {0:n}.....
Questions:
is this controllable by "Culture / UICulture" in web.config (played with it without success!
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[code]....
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Oct 23, 2010
I changed a text field to a template field assigning the selected text and the selected value is being assigned to another currency field also templated. I get aa error
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Nov 15, 2010
I want to test the request.querystring value in itemtemplate.
I want it like
<ItemTemplate>
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Qty*Price;
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Qty
</ItemTemplate>
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Dec 30, 2010
How can I properly receive these Array of Inputs on asp.net?
[code]....
In php you can access field by $field = $_POST["field"]
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Jan 7, 2010
I want to have an input control for calendars and next to a calendar button that users click on it it will pop up a calendar and when the user selects a date, it will populate the input form with the date.
I have found one on this link:
[URL]
the example in the link above uses drop downs for month and day. I only need one input field. either asp.not or javascripts whichever is easier
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Dec 6, 2010
I am REALLY new to ASP.NET MVC, and it is alien to my way of thinking.In my project, I have managed to get as far as allowing the user to add, edit or delete entries from a table. What I want to do is ensure that a specific field (i.e. "Tank_Number") does not get duplicated. What is the correct way to implement this?
I would like to use custom validation in the model class, the reason being the handy error messages, but am getting more confused as I read more articles. At the moment, I am using an If statement in the Controller, but it isn't ideal.
Here is my example code:
Controller [Code]....
Model
[Code]....
View
[Code]....
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Mar 10, 2011
My Required validation for a field doesn't work because even the user didn't input anything, the watermark text is sent to the server. What's the best way to handle this? I'm using jquery and asp.net mvc.
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Sep 27, 2010
I've got an ASP.NET 4 site on which I want to allow people to put '<' in their password. However, .NET gets in the way by blocking (what it sees as) an attempt to put HTML in a form field. I know I can turn off input validation entirely, but I only want to turn it off for this one field. Does anyone know an easy way to do that?
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May 24, 2010
How could can I get the caret position from within an input field.
I have seen a few bits and pieces on google but nothing bullet proof.
Basically something like a Jquery plugin would be ideal so I could simply do
$("#myinput").caretPosition()
I realise there may by other non-jQuery solutions and these would also be brilliant if anyone has any??
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Aug 13, 2010
I'm using Data Annotations and Metadata attributes in my models to do automatic validations on my forms. Any who, I've got a problem where I have an int field I need to change the error when a letter is entered. Im guetting the default error: "The value 'A' is not valid for Número.". But since this is a spanish web, i need to change the error to something in spansih. Any who, I cant find where to change the ErrorMessage="" to what I need.
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Jun 23, 2010
This may be a simple question but here it goes. I have an insert form that captures the current date of entry. What I would like to do is not cause the user to enter or select the current date but have it display on page load and capture to the field in the table on submit.I am rather new to ASP and am using Visual Web Studio 2008.
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Apr 21, 2010
I'm pretty new to MVC 2 using the Entity Framework. I have two tables Company {ID int identity PK,Name nvarchar} and User {ID int identity PK,UserName nvarchar,CompanyID int FK}. A Foreign Key exists between User and Company.I generated my ADO.NET Entity Data Model, a Controller and a view to insert a record. My HTML form has the fields Company and UserName and the is when I click save a Company and User is inserted into the database. Sounds straight forward right!
My question is as follows:
I created a strongly-typed view derived from my 'User' entity. I'm using the the html helper Html.TextBoxFor(model => model.Organisation.Name) but the html name attribute for this input field is 'Organisation.Name'. My problem with this is that the dot throws up all sorts of issues in JQuery, which sees this as a property. If I want to change the name I read that I can use DataAnnotations but because I used the Entity Designer this involves using Buddy Classes. Seems like a bit of overkill just to change the html name attribute on this input field.
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Mar 12, 2011
I'm a total newbie with MVC -- learning it with MVC3 using Razor.
I just watched the video on PluralSight and was just following along with the example. I created my own Movie and MovieRepository objects. I then created a strongly typed view for adding a new movie. This is what's in the view:
[Code]....
My Movie object looks like this:
[Code]....
If I click submit without entering anything in the input field, I get validation messages i.e. The Rating field is required or if I enter non-numeric data, I get The field Rating must be a number.
I didn't wire this and wanted to understand where this is coming from.
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Nov 7, 2013
I have qi1 decimal field ... coming error in line ...
txtCostPrice = Convert.ToInt32(((TextBox)GridView2.Rows[i].FindControl("txtcostprice")).Text);
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public void savedata() {
con = new SqlConnection(dbcon);
con.Open();
int txtCostPrice = 0;
//int txtSellPrice = 0;
int Primarykey = 0;
[code].....
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Mar 31, 2010
Using ReportViewer control v9 in .aspx page - When displaying date type parameter field in my report nothing happens when calendar icon is clicked (no calendar page, no error) in ie 8. FoxFire works.Same report works fine when viewed directly on the report server in ie8.
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Nov 11, 2010
I m using a dropdownlist from sqldatasource based on input from listbox like this-
[Code]....
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Sep 15, 2010
Given a set of uploaded files in Request.Files, how do figure out which form field yielded which file?
I have a generic form emailer that various forms post to. This file generates an email of the name/value pairs contained in the form post. I'm trying to add support for uploaded files such that the table of name/value pairs will show the name of the file upload element and the name that the file was saved as.
However, I can't figure out how to link that information together. HttpPostedFile doesn't contain any information about the HTTP request (like which field name was used), and Request.Form doesn't contain any entries for uploaded files.
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Feb 4, 2010
I have an html input control that is a radio button. This radio button needs to disable required field validators when selected. This is my non working code so far. What have I not done?
<input ID="card1" runat="server" type="radio"/>Card<br />
btnSubmit_Click
{
if (card1.Checked == true)
{
RequiredFieldValidator10.Enabled= false;
}
}
this however doesnt disable the control.
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Jan 26, 2010
I want to integrate paypal inside my shopping cart. For that it requires a html form to be embeded inside .aspx page with the action to paypal and method is post. Inside that form there are some hidden input filed. I want to assign one of those hidden field's value from server side code so i need to access that filed from server side. But how? Here is my form:
<form action="[URL] method="post" id="PaypalForm">
<input type="hidden" name="cmd" value="_cart"/>
<input type="hidden" name="upload" value="1"/>
<input type="hidden" name="business" value="[URL]
<input type="hidden" name="item_name_1" value="Item Name 1" />
<input type="hidden" name="amount_1"/>
<input type="submit" value="PayPal" />
</form>
I want to access amount_1 filed.
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May 3, 2010
I know the < and > characters will cause this error, but what other characters/inputs will cause this error?
I'm testing for this error in the Global.asax, and reridrecting to an error page where I want to list all possible values which cause this error, so the user can go back to their page and get rid of them.
I've done some googling, but all I see so far are the < and > characters...surely there are more out there.
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Jan 16, 2011
I have this in my code-behind file (VB.NET):
[Code]....
Here is the HTML source of the part of the page:
[Code]....
Where that comment in the code-behind file says "REFERENCE IN CODE HERE", that is where I want to set the value of the "remLen3" input (client-side control) to "30 characters left."I obviously left out irrelevant things like inserting the txtNewComment.Text into the database. But what's going on here is when the user types in something into the txtNewComment text box, I'm using javascript to change the value of the remLen3 control.My problem is that when I submit the text from the txtNewComment textbox to the database and set the txtNewComment.Text equal to Nothing, I don't know how to reset the remLen3 field value back to saying "30 characters left.". I already tried to add a "runat="server"tag to it, but when typing stuff into my txtNewComment textbox it gives me an error. I already tried to figure out what the error meant, so I'm not going to spend time trying to solve it anymore; I would rather just see if there is a workaround to using the runat="server" tag. Maybe do some kind of a CType(FETCH_REM_LEM3_HERE_SOMEHOW, INPUT_TEXT_TYPE??).value = "30 characters left". If there is a way of converting the input text control (remLen3) that way, then how would that be done? I just want to change the value of that field when the server-side button is pushed.
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