I wrote an ASP .NET database app, that store data in the database, for some reason, and i've tried all that I know, when two or more users submit info simultaneously, their data gets store wrong, i.e. the data gets mixed up.
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In general, If multiple users thru an application try to update the same tables in database simultaneously, then by default on what basis the priority will be given.Like if we don't have any extra logic for the locking implemented.
View 3 RepliesI have three table like above, table C is mapping table which has foreign key of Table A and B.How can i select and insert data in Table C using Entity Frame Work?
View 2 RepliesI have a problem with my SqlDataSource, when the web form i loaded it works OK but when I execute an insert statement and then i execute the method DataBind(), the data in my grid view is not changed.
View 1 Repliesi Am using Special character while insert in the database. When i user single Quotes('), it shows an error that "Unclosed quotation mark after the character string" How can i over come this issue. But i want to insert the special characters"
View 5 RepliesI'm having a problem when two or more users simultaneous work on a webpage and provides info to create a new record in my database. the issue is that for some reason, their entries get mixed up and the wrong data gets commited to the database, how can i fix this. All the webpages i browsed for help provide optimistic concurrecny on updaing/deleting existing records, not creating new ones.
I also turned off SessionViewState, but I don't think it helps.
I'm not using a ObjectSource Control, i'm creating new instances of the BLL Classes in my code as I need. Should I null the objects after I use them? They are only created in the scope of a method, so it should essentially dispose of the object when the method completes.
I have a aspx.cs page that renders a pdf file directly.
To render the pdf directly i have to use ContentType="applicationpdf" in my .aspx page.
The problem I am facing now is:
I need a time-request field - namely, the user would have to enter the time (from and to) and hit Go and the pdf will be rendered according to the date-requested.
However, I cannot display the time-request (or page option) field and render the pdf simultaneously.
How can insert, Display ,update multiple records simultaneously through GridView in Asp.net.I have Button for insert, update . I want insert, update multiple records through a GridView in a single click.
View 1 RepliesI have some issues about retrieveing and storing date information to my database (ms sql server 2005).My data column is a DateTime, and i have set my web.config globalization culture is set to "en-gb"
When i retrieve date from the datebase it appears as dd/MM/yy, that's fine. But i cannot insert a new date as same format?! It will only accept MM/dd/yy or yy/mm/dd.Right now i'm using this code to correct the error:
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Is it possible to change the date format on the database or something, so i dont need to use this code?
i want to insert some html code like
<html><body>jhguyegjh<?body></html>
but it is not inserting
I am unable to insert records into the database due to this error:
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object
This sentence is highlighted in red:
osdb.Insert_ItemsRecords(txtID.Text, txtItemName.Text, txtItemDesc.Text);
BindGrid(true);
How do i set set the osdb to a valid instance?
URL.... When I wrote this code in other page with different SP It didn't worked correctly I change SP in new SP I used INSERT code instead of UPDATE now when users didn't select Item from ddl3 it insert 'please select' in table these are my code
protected void ImageButton2_Click1(object sender, ImageClickEventArgs e) {
SqlCommand _cmd = new SqlCommand("insertSreg", _cn);
_cmd.CommandType = CommandType.StoredProcedure;
_cn.Open();
[code]....
I have 2 table in database
1-Estate_free Table
2-Black_list Table
in Register.aspx users can insert their information and when click on insertButton it insert their data into Estate_free table
below is code
protected void insertButton_Click1(object sender, ImageClickEventArgs e)
{
SqlCommand _cmd = new SqlCommand("InsertFreeState1", _cn);
_cmd.CommandType = CommandType.StoredProcedure;
_cn.Open();
[Code].....
in above SP I define that if users tell or Mobile number was in Estate_free ro Black_list table it doesn't insert data into database and show 'You can just register 1 Time' and if there wasn't their mobile or Tell in those table it insert their data into Estate_free table and show 'You have been registered'.
problem is that when I enter data in database with new mobile number it didn't insert data in database and show 'you can just register 1 Time'.
I mean it never insert data in database.
what should i do?
i have two sqldatasource controls. one i use to display data in textbox's ,filter'd by a select parameter in page behind code. Once checked, i want to copy this data to the other datasource ,by selecting checkbox.Then display this data in detailsview control.
At present the two datasource controls declared , render data to the page simultaneously during pageload. I want to first check data in textbox's from first source, before second datasource is rendered to screen. note, both are filtered by a page variable. i wish to leave the textbox datasource control in situ, as other controls and code depend on it.The other detailsview datasource is my problem?
different return for added users and for rejected users?
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I have placed Chekc box in Gridview when i select the check box can perform 2 operations simultaniously one is entire recordset is populated into form fileds and second one is can delete the selected record permanently from database table.following code for this fuctionality.
GridviewCode
<asp:GridView ID="GVData" runat="server" Height="75px" Width="76px" CaptionAlign="Top"
Font-Size="Medium" EnableModelValidation="True" [code]....
I'm currently doing a program to store some data like a Login/ Registration page. Datas include username, age, password etc.I created a save button to save the datas into the accdataset.Now when I start debugging, and i type in the information requires (Name,password etc..), and i click on the save button,the information i wrote will be shown in the acctabledatagrid,<- It have been working correctly till now.However, whenever when i stop debugging and edit the program, the datas will be clear and there will be no information shown on the acctabledatagrid.So I'm quite stuck here as I am unsure where my problem lies.
Imports System.Data
Imports System.Data.SqlClient
Public Class Form1
[code]...
I'm using the following C# code to insert the data from my webform. I'm trying to add additional information inside the SQL server database which holds the information about my memebership system.I added a table to it with the following fields:UserId (F.k) , FirstName, LastName, StudentId, Status.My user does get created however my additional data doesn't get inserted.I recive no errors, so I really don't know what I'm doing wrong.Here is my C# code:
[Code]....
I am trying to pass in as an insert parameter for SQLds2 the scope_identity of the insert of SQLds1.
Exception Details: System.InvalidOperationException: Error executing 'InsertCommand' in SqlDataSource 'SqlDataSource1'. Ensure the command accepts the following parameters: @Name1, @NewId
[Code]....
I do have a details view, which insert data to a database table using SQL Datasource. Now i need the data to be inserted in to 2 tables instead of one.
View 1 RepliesI am using 1 textbox with a Ajax Calendar extender to allow my user's to select a date graphically (exp: 12/15/2009). I have another textbox for the hour and minutes in military time(exp: 15:30). I think i have the code to grab the data from the 2 textbox's and combine them to be inserted into the field (exp: 12/15/2009 15:30). Here is my insert code for the Field:
[Code]....
However unless I make all the fields Nullable the insert fails, on top of that none of the other field that I have selected on the Detailsview Insert or Edit are inserted into there fields. Half of my fields have to be non-null values. So how do I fix this?
I can supply additional vb code and the aspx code if needed.
This is the error I'm getting: Cannot insert the value NULL into column 'Operation_type', table '/GAOSDB.MDF.dbo.BC_Perf_Log'; column does not allow nulls. INSERT fails. The statement has been terminated.'
This is the first non-null column.
I need to get this figured out because I have 30 other web pages that will be utilizing the same approach.
I have three tables:
Colour(Colour ID, Colour)
DogColours(ColourID, Dog ID)
Dog(Dog ID, Breed)
Colour ID and Dog are primary keys.
I have three web forms, one for each table. Dog colours consists of data that is already in the system from the other two tables. It basically joins a breed to a colour. My problem is this:
When i try delete a dog which is being used in dog colours the program crashes. How can i prevent this crash?
The second problem, the data source in the dog colours web form has the insert, update and delete tick boxes greyed out in the 'configure the select statement' so i am unable to delete a colour and dog joined together. how can i delete something in the dog colours?
i am trying to upload excel sheet data to table which contains xml data type. one of the record in excel sheet contains xml data like below.
<location><locid>1</locid><locid>2</locid><locid>3</locid><locid>4</locid><locid>5</locid><locid>6</locid><locid>7</locid><locid>8</locid><locid>9</locid><locid>10</locid><locid>11</locid><locid>12</locid><locid>13</locid><locid>14</locid><locid>15</locid><locid>16</locid><locid>17</locid><locid>18</locid><locid>19</locid><locid>20</locid><locid>21</locid></location>
because of this length or some else...i am unable to upload excel sheet to table.
I have a simple contact info webform with some validation rules developed in VS2010 that inserts a row in a SQL 2005 Express db.
However it does not always insert a row. (does for me !) There are no errors reported either in the browser or in the event log.
how I can narrow down the cause?
My code is faily simple. Basically the button calls the Insert command in the SqlDatasourcce , as generated through VS I do have one piece of code that forwards the user to a new page once the form is fillied in.
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i want to inser the value in data base ...i am using asp.net in visual studio 2008...i want syntax to insert the datetime,integer ,float,string data type into the data base.
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