i want parse null value and disable checkbox in form view how can i do that that's my current code:
<asp:CheckBox ID="FLPCheckBox" runat="server" Text="Full Load Passed" Checked=' <%# (Eval("FullLoadPassed")==DBNull.Value ? false : Eval("FullLoadPassed"))%>' />
I'm trying to bind a nullable bit column, which at the moment is mostly null, but I need to somehow convert the null to a 'false' on runtime because it doesn't bind to a checkbox if it's null. But, I am currently unable to change the default value and update all records accordingly - is there a way to do this in runtime?
View 2 RepliesSOURCE CODE -
Code:
<asp:GridView runat="server" ID="Grd" AutoGenerateColumns ="false" >
<Columns >[code]....
You can see in Pic Attached, Records of table TBL_STUDENT, and also find the output what I am getting . For the records - 2 and 3 whose Name is B and C, I m getting the correct status,But for the Record whose Name is A, I am not getting correct Output, Because in Database null is dere, I want if in database null is dere then checkbox is Unchecked. How to to dat???
Using a class component, an Object data source and a formview I am successfully pulliing data from a SQL database. In some cases the rows contain one or more Null values and I would like them to be ignored completely. My simple code follows:-
<%# Eval("add_1") & ","%>
<%# Eval("Add_2") & ","%>
<%# Eval("Add_3") & ","%>
OUTPUT:-
Rose Cottage, 123 New Road, Margate,
I have setup my business object to have a create_date and edit_date members both datetime datatypes. My company want to display the create_date and edit_date fields in a gridview for each transaction. The problem i have is that after insterting a record it will have a valid create_date but no edit_date and when displayed in the gridview it defaults to datetime.minvalue (My default). How on earth do i show an empty field in my gridview for a null datetime field in the database?
I am using similar architecture to the Imar Spaanjaars example of a tiered solution. With a few small tweeks it has worked well for me for ages. I am passing a List<Database> to my object datasource which connects to my gridview.
Why method FindControl() returns null on FormView until call DataBind(). After that it returns everything correctly? What workaround are there? Call DataBind() before first call of FindControl() ?
View 3 Repliesusing asp.net 3.5
i am trying to add a dropdownlist and a checkbox inside (edit template) FromView with SQLdatasource ,, what is the UPDATE command i shoud use ??
have a checkbox (AllofNevada) that should enable/disable a checkboxlist (of counties in Nevada). The javascript code I have works. I placed the code:
[code]....
This is fine in the beginning but once the user selects 'save' and the code:
[code]....
I have a formview which contains a question and 5 checkboxes with answers alongside. Some of the questions are true/false so I want to make checkboxes 3, 4, and 5 invisible.
Should this be handled in code-behind? (I don't see any ready-made events for paging through the formview) or is there a way to test data and change the visible property in;
<asp:CheckBox
ID="CheckBox3"
runat="server"
/>
<asp:Label
ID="QA3Label"
runat="server"
Text='<%#
Bind("QA3") %>'
/>
There is select and update SQLs in sqldatasource and checkbox in formview which is 2way databinded to an sqlserver bit field type.
it always gives same error
Specified cast is not valid
I excpect nobody posts me an "eval" solution.because update is a need for checkboxes which are attached to a bit field.
a ready-to-use small sample project with DB I attached HERE
Specified cast is not valid.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidCastException: Specified cast is not valid.
Source Error:
[Code]....
I've got a datalist, with some checkboxes in it.But if i press a button, he runs trough the datalist, and checks if there are checkboxes checked.But all checkboxes are null, so there is something wrong, but what?My code:
<asp:DataList ID="DatalistSearch" runat="server" RepeatColumns="1"
onitemcommand="DatalistRelatedProducts_ItemCommand"
onitemdatabound="DatalistRelatedProducts_ItemDataBound">
[code]...
I'm putting together a page that allows the user to enter a new record in an SQL table. A bunch of the fields in the table are bit datatypes. I want to use CheckBoxes to correspond to the bit datatype columns in the SQL table.
How do I bind the checkboxes to the SQL table columns?
Here's what I have, not sure if this is right:
[Code]....
I have a formview on a web page, set to insert mode as default. The form view is bound to a SQLDatasource. This datasource has a custom query written to select the details for this formview. The query joins two tables to provide relevant detail and not just an ID for one of the elements on the form view.
The first tabe contains information regarding projects and the second table contains detail regarding Resources. First table has the following definition:
[Code]....
I have a rather large formview that asks for a variety of input values (physical totals vs pos report totals). I have created vb code to calculate the differences and subtotals of various types prior to inserting the data so people can check for entry errors.
Its a closing reconciliation form. Here's the problem: If they forget to enter 0 in a field that doesn't have any totals, a big ugly error message displays. I would like to avoid this. I can tell them until I am blue in the face to remember to enter 0 and not leave any blank fields, but realistically its going to happen and I need to handle it in the programming.
I have been struggling to either default the values to zero to start with, replace a null textbox with 0 before the calculate runs...but I can't get anything to really work. What is the best way to handle this?
Here is the aspx page:
[Code]....
And the code behind page with working "Calculate" as long as fields are not left blank (I took out all the test code that made it not work at all)
[Code]....
Finally, the error message I am getting is the following:
[Code]....
I can't seem to find the right combination of programming to account for the "" string to be 0 so that it will add or subtract values in my calculate. I have my sql table setup with default values of 0 so if a field is left blank it will be entered into the database as 0 and not null. It is really just for my inserting of a reconciliation and the running of Calculate Totals to double check their work prior to inserting into the database.
I have a Sql Data Source that queries my class database. What I'm trying to do to save myself some landscape is to check a checkbox if any of the pre-requisite fields are not empty. I have this laying inside a gridview. My code doesn't error out but it doesnt' do anything either.
[Code]....
My query is like this:
[Code]....
So in a nutshell, if there is any value in PR1 - PR7, I want to check my checkbox in the gridview.
I have a FormView that is loaded with a records from my DB. Some of the fields may be blank or null. I am trying to check the value of some of the text boxes to verify that the user has updated the fields prior to allowing a DB update from the Edit Template.
I can not seem to get the correct syntax on the if statment to check the value of the text box....
[Code]....
I've got a details view control on a page. One of the columns, from the database table, is a bit field. It is not nullable, and that's the way it has to be. Also, in most cases, when inserting data, it will be true (1) be default. I've found in testing, when inserting data, that it was false, for some reason. So, I changed the column to a template field and went to the InsertItemTemplate for that column, and changed the checkbox Checked property to True, instead of the default False. However, it has really screwed up the page because now it won't save anything at all! When I try saving something using the details view, it does show the checkbox as being checked, but man, once I try saving it I get an error message back from the database saying that the column doesn't allow for nulls.
Huh??? How in heck can the column on the page have a value (it is checked), but when it goes to save something it fails? Furthermore, before I converted this field to a template field, it worked perfectly. I tested several other insertions, and they all worked. But when I converted it to a template field, it stopped working? What's that about? I even tried setting the default value for the Checked property of the checkbox back to False, but that still doesn't work, it still wants to pass in a null. What's going on here? Why is it that converting a field to a template field, which was working perfectly fine before I made the convension, stop it from working at all?
i have the following scenario: one formview. when in editmode there is a child formview linked to the other by a column value. i need to take the value of one of the values of parent formview controls and set it to a textbox of child formview in insert mode. I wish to know which event should I use in codebehind to bind both controls? (that escenario will have paging and must keep the binding as if it was master detail)
View 9 RepliesI am having a problem getting the FormView Control in Visual Studio 2010 inserting data into a SQL database I have managed to view the data that is currently in the database but when I click insert I get an error message I just don't understand what I am doing wrong
View 1 RepliesI have a typical gridview/formview master control setup. When I try to update or insert I don't get any errors but it also doesn't work. When I try to insert data all I get are null values and when I update, none of the values are updated. The formview looks like its working, but just doesn't. The primary key is an identity and it auto-increments by one.
[Code]....
Is there a way to change the mode of the formview control base upon a value that is retrieved from the database. Something along the lines below?
db value | formview mode
1 read-only
2 insert
3 edit
I would like to have a radiobuttollist were you can select value null.
Something like this:
[code]....
I am trying to insert null in a database column depending on a gridview datakeys value (if being "" insert null into database)However, I am getting a space ' ' inside the database column.
string sbcId = gvTest.DataKeys[gr.RowIndex]["myColumn"].ToString();
insgnp.Parameters.Add(new OleDbParameter("EMPID", (sbcId==""?DBNull.Value.ToString():sbcId)));
In a itemtemplate in a listview control, how can I set the value of a checkbox to the 'IsActive' bool value being returned from my database?
<asp:CheckBox ID="CheckBox1" runat="server" Checked='<%# (bool)Eval("IsActive") %>' />
I'm not sure if I can explain this properly, I just need some advise. I'm working with a formview and datasets to populate the information. However I have a table specifiying which fields to display. In my table If cell, work and home fields are selected then those fields must be populated in the formview if they not selected then it shouldn't be shown. These are 2 different datasets being pulled into the formview.
Right now I have a datasource populating the formview via the wizard, not sure what to do next.