Web Forms :: LINQ CRUD Operations - How To Perform Updation
Oct 21, 2015How to do CRUD in LINQ?
how to perform updation using linq where i have multiple conditions for for single row and updating multiple fields to that row?
Similar Messages:
Web Forms :: Using Master Page For CRUD Operations?
Jan 9, 2011I'm developing an asp.net web applcition that works with sql server. i'm using Entity model as DAL.I user repository pattern for my business layer, now, i'm going to design UI.this is my business layer code:
[Code]....
I have some questions: becase all of entites need to have CRUD operations, so i want to have a master page with Insert, Edit, Deleter Button and a place holder for entity form, so for each entity i create a form with this master and create textboxes and label in asp:content tag.for this to be done i konw master must have a Interface to do operations. so i wanted to define ISchoolSystemRepository<??> as a property in master page, but i must pass it T which will determined in runtime. so
1.how i do this?
2. is this approach right design
VS 2008 - Reusable Control For CRUD Operations?
Jan 20, 2011I want to build a reusable control which will enable e to perform add/edit/delete operations easily. All I want to do is give the control a datasource and it will handle the rest.
What controls should I use? I want it to be as user friendly as possible.
Data Controls :: CRUD Operations In GridView Without Using Database
Sep 20, 2015I only need one textbox inside gridview and other operational buttons like add , edit , delete in gridview. I just need that these buttons can save the data in datatable like we do :
DataTable dt = new Datatable();
I don't want to save it in database at this stage. CRUD Operations using datatable inside gridview is my aim.
Data Controls :: CRUD Operations On GridView Using JQuery AJAX
Dec 2, 2013I have seen a sample from the Author of this Blog URL....this works fine but how to apply CRUDE operations & Is it possible to set CommandName/ Command Argument using JQuery in asp.net using C#?
View 1 RepliesForms Data Controls :: GridView - Check Box Perform 2 Operations Simultaneously?
Apr 9, 2010I 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]....
How To Perform Same Operations On Both WebControls And HtmlControls.
Jan 19, 2010I find myself needing to preform the same actions on both HtmlControls and WebControls. I am a firm believer in DRY and find the fact that there is only the Control class to use if I want to consolidate the functions on both types. The problem that I have with using Control is that there certain properties that both HtmlControl and WebControl expose that Control does not. In the current case, the Attributes property is the problem. how to avoid the duplication of code in this type of instance?
View 2 RepliesMVC :: To Perform Mathematical Operations Within A .aspx View?
Jan 14, 2011Is it possible to perform mathematical operations within a .aspx View.? for example..lets say i have a total number of pencils of say 100. and i have 12 students on a data table with his or her name, and the number of pencils she has
Student Name: Pencil #
John 10
Sarah 12
Linus 19
But while rendering the view i want to calculate the Percentage of pencils one student possesses out of the total. (John would have 10% of the total 100 pencils)
How would i just perform this basic math operation, and encode the result into the view. I know i need to store the 100, and divide by each count of pencils for each student within the foreach loop. but i keep getting 0. This seems very elementary i know.. Help would be very appreciated. Google seems to have nothing for me.
WCF / ASMX :: Create A Web Service Which Consists Of CRUD Operations Create?
Jan 20, 2011i want to create a web service which consists of CRUD operations Create, Retrieve, Update and Delete. creating web methods on insert and update operations.
View 2 RepliesDataSource Controls :: Can't Perform Create / Update Or Delete Operations
May 12, 2010when i want insert a record i see an error like this
Can't perform Create, Update, or Delete operations on 'Table(MainMenuLink)' because it has no primary key.
with this codes:
MyLinqDataClassesDataContext db = new MyLinqDataClassesDataContext();
MainMenuLink li = new MainMenuLink { Link ="../error/error.aspx", LinkSubject = "subject" };
db.MainMenuLinks.InsertOnSubmit(li);
db.SubmitChanges();
ShowLinks();
what is the problem?
my table have a primary key but i dont know why give an error!!!
DataSource Controls :: Insert A Record Error - Can't Perform Create, Update, Or Delete Operations On 'Table?
May 11, 2010when i want insert a record i see an error like this Can't perform Create, Update, or Delete operations on 'Table(MainMenuLink)' because it has no primary key. with this codes:
MyLinqDataClassesDataContext db = new MyLinqDataClassesDataContext();
MainMenuLink li = new MainMenuLink { Link = "www.tprogrammer.com", LinkSubject = "subject" };
db.MainMenuLinks.InsertOnSubmit(li); [code]....
DataSource Controls :: Perform A Search For Records In Linq-to-Entities?
Jan 26, 2010I trying to create a search mechanism for records in a EDM based on text entered on a text box in a web page.
For example, if I enter a partial name of a customer and/or state abrebiation for that customer on the Text Box (abc, TX)s, I want to search name and state fields in a Customer table in my database for matching customers.
I found a solution with the namespaceSystem.Linq.Dynamic, but for some reason it is not working. It does not expose the Search() method. Here is the code I am using to perform the search;
[Code]....
Web Forms :: Gridview Updation Of Record Using Stored Procedure?
Sep 21, 2010i have bind griview dataSource with Store procedure having join of 3 table how can i update this gridview data using stored procedure?
View 5 RepliesWeb Forms :: Updation Not Happening Correctly - Stores Value As 0 In Database
Jan 15, 2012I have a gridview with a select command.. When user selects a row.. I need to populate 4 dropdownlists with the values in gridview, dropdownlist which are also populated at page load event...
Though there is value in the dropdownlist when i try to update it selects 0th value.. Since while updating i use drptask.selectedvalue.tostring() since i am saving int values in database
It stores value as 0 in database..
Forms Data Controls :: GridView Row Index On Button Click For Updation?
Jun 14, 2010I have GridView with no data source. That I have persisted in memory.When editing row, I have fetch data to ModalPopup. When I edit data on ModalPopup using button click, how to find row index?I mean, how to find which row has been updated?
View 15 RepliesForms Data Controls :: Database Is Updated The Updation Must Be Availabe To All The Users Automatically
Jul 29, 2010Lets take an example of online ticket booking system. Many users could be booking the tickets at any point of time. a GridView displays the list of Allotted and Free seats If a seat gets booked, this information must get updated in all the opened pages in user's browser. User need not require to refresh the page to see if a seat is booked or not Should i put GridView in update panel and keep looking into the databse constantly ??? This could turn out to be a heavy work if databse is too large any other alternative?? or should i stick with the above approach....?
View 10 RepliesADO.NET :: Getting Error In Updation Through Gridview
Aug 9, 2010i am trying to update table but geeting error
"System.Data.OleDb.OleDbException: Syntax error in UPDATE statement."
here is my code :
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
string Id = GridView1.DataKeys[e.RowIndex].Values[0].ToString();
TextBox txtDate = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtDate"));
TextBox txtAction = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtAction"));
TextBox txtScrip = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtScrip"));
TextBox txtnBuy = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtnBuy"));
TextBox txtSell = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtSell"));
TextBox txtremarks = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtremarks"));
TextBox txtTarget = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtTarget"));
TextBox txtDifference = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtDifference"));
TextBox txtProfit = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtProfit"));
con.Open();
OleDbCommand cmd = new OleDbCommand("UPDATE performance set ndate='" + txtDate.Text + "',Action='" + txtAction.Text
+ "',Scrip='" + txtScrip.Text
+ "',nbuy='" + txtnBuy.Text
+ "',nsell='" + txtSell.Text
+ "',remarks='" + txtremarks.Text
+ "',Target='" + txtTarget.Text
+ "',Difference='" + txtDifference.Text
+ "',nprofit='" + txtProfit.Text
+ "' WHERE nid=" + Id, con);
cmd.ExecuteNonQuery();
con.Close();
GridView1.EditIndex = -1;
bind();
}
<asp:TemplateField HeaderText="Date">
<ItemStyle Width="100px" />
<EditItemTemplate>
<asp:TextBox ID="txtDate" runat="server" Text='<%#Bind("ndate")%>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%#Eval("ndate") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Action">
<ItemStyle Width="100px" />
<EditItemTemplate>
<asp:TextBox ID="txtAction" runat="server" Text='<%#Bind("Action")%>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%#Eval("Action") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Scrip">
<ItemStyle Width="100px" />
<EditItemTemplate>
<asp:TextBox ID="txtScrip" runat="server" Text='<%#Bind("Scrip")%>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%#Eval("Scrip") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Buy Level">
<ItemStyle Width="100px" />
<EditItemTemplate>
<asp:TextBox ID="txtnBuy" runat="server" Text='<%#Bind("nbuy")%>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label4" runat="server" Text='<%#Eval("nbuy") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Sell Level">
<ItemStyle Width="100px" />
<EditItemTemplate>
<asp:TextBox ID="txtSell" runat="server" Text='<%#Bind("nsell") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label5" runat="server" Text='<%#Eval("nsell") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Remarks">
<ItemStyle Width="100px" />
<EditItemTemplate>
<asp:TextBox ID="txtremarks" runat="server" Text='<%#Bind("remarks") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label6" runat="server" Text='<%#Eval("remarks") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Target">
<ItemStyle Width="100px" />
<EditItemTemplate>
<asp:TextBox ID="txtTarget" runat="server" Text='<%#Bind("Target") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label7" runat="server" Text='<%#Eval("Target") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Difference">
<ItemStyle Width="100px" />
<EditItemTemplate>
<asp:TextBox ID="txtDifference" runat="server" Text='<%#Bind("Difference") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label10" runat="server" Text='<%#Eval("Difference") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Profit">
<ItemStyle Width="100px" />
<EditItemTemplate>
<asp:TextBox ID="txtProfit" runat="server" Text='<%#Bind("nprofit") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label8" runat="server" Text='<%#Eval("nprofit") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<EditItemTemplate>
<asp:LinkButton ID="link1" runat="server" Text="Update" CommandName="update"></asp:LinkButton>
<asp:LinkButton ID="LinkButton3" runat="server" Text="Cancel" CommandName="cancel"></asp:LinkButton>
</EditItemTemplate>
<ItemTemplate>
<asp:LinkButton ID="LinkButton4" runat="server" Text="Edit" CommandName="edit"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Delete">
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandName="Delete"
Text="Delete"></asp:LinkButton>
<ajaxToolkit:ConfirmButtonExtender ID="ConfirmButtonExtender1" runat="server" ConfirmText="Are You Sure Want to Delete" TargetControlID="LinkButton1">
</ajaxToolkit:ConfirmButtonExtender>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<RowStyle BackColor="#9cd3fa" />
<FooterStyle BackColor="#CCCC99" />
<PagerStyle BackColor="#F7F7DE" ForeColor="Black" HorizontalAlign="Right" />
<SelectedRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" />
<AlternatingRowStyle BackColor="White" />
</asp:GridView>
Reg Storedprocedure Updation Not Working?
Nov 8, 2010I have a C# DotNet application and an SP of SQL Server 2005. I had made changes to the SP. I found that the connection string of database in the web.config also is correct and it is pointing to the same database in the same server but after changing the SP and checking form front end I am not able to get the updated SP results. After changing the SP do we need to build dll of middle tier again? What all changes I need to make. When I run the SP individually it is giving correct updated results. i had done IISRESET also after chnaging the SP.
View 1 RepliesMVC :: Database Updation With 3 Tables?
Feb 24, 2011I have 3 tables and I need to display ListBox and need to have facility for add/update facility. Here are the tables
Table 1 - PROJECT
Table 2- PROJECT_PRODUCTS
Table 3 - PRODUCTS
Now I have to Display PROJECT table for creating/editing and while doing it I would like to display ListBox(MultiSelect) for Products and I would like to know how can I implement this for editing?
Forms Data Controls :: How To Make A Grid View For Performing Crud Operation
Feb 4, 2010i make a grid view for performing crud operation. In last coloum item template of grid view, i write code as below..
[Code].....
C# - Jquery Events Are Not Working/firing After The Updation In UpdatePanel?
Jul 10, 2010I have got an issue after updation in UpdatePanel. The issue is the jquery events are not working/firing after the updation in UpdatePanel. At first time, the jquery events work, but not after the updation in UpdatePanel. If I remove the UpdatePanel, the problem is solved. But I have to use the UpdatePanel.
View 1 RepliesSending Email Verification Link With Database Updation
Jan 3, 2012i have popup on my webform with name and email id submit button,So when u click on submit button the name n email is entered into SQLSERVER database.As user click on submit a verification link should be sent to him table named "SUBSCRIBE" in database having columns :Name, Email, Date Time,Validated,ValidationEmailSent,Validation code.where name n email will come from as user entered....but others has to b generated. where
validation=if clicked on link den 1 otherwise 0;
validation Email = if email id is proper value is 1 not proper value should be 0;
validation code is ramdom no;
values of this 3 columns will b updated in database as per user response. How to write code for this problem as i have never used database sql server???
Forms Data Controls :: Bind A GridView To A DataTable (in Viewstate) With Full In-line CRUD?
Sep 24, 2010I need a bit of help with a scenario. I am working on a web application that requires huge amounts of data to be Added, Deleted, and Updated. The data entry forms are divided into logical groups through Multiviews. All the information is saved when the mighty Finish button is pressed. The current setup (previous developer) does not allow me to use transactions. Therefore, if I am to save a new Courier to the database, I need to add his/her Distance and Rate info. In addition, I need to add his/her Banned Areas info (Area Name, Post Code).This is where it gets interesting. Obviously, the DistamceAndRate table and the BannedArea table in my SQL Server will have the CourierID as a foreign key. Since I'm going to save the Courier as well as the Rates and Areas info in one go, I cannot have the newly created CourierID before. Therefore, I cannot bind my Grids for Distance + Rates and Banned Areas directly to database.What I am doing is creating two DataTables and managing them in Viewstate through properties as follow:
[Code]....
So, on page load, the DataTables are initialized with a blank schema. Here are the attempted CRUD implementations (Distance and Rate only):
[Code]....
I am having issues when I am canceling a new entry and when I am editing a new entry. In addition, for Distance and Rates, Rate is acting as unique (cannot be repeated) and attempting to control that is also giving me a headache. I end up creating blank rows.And here's the ASPX cut-out:
[Code]....
Hope to get an answer soon.Also, off-topic, I'm using LINQ here. In order to save a Courier and his/her extra details, I first save his/her address to DB. Then I take the ID of the address and save the courier. now the courier ID is avaliable and i start filling extra tables related with the courier table. If something goes wrong, I have to manually delete created rows. LINQ uses transaction internally but only until a SubmitChanges() call. I'm forced to save each entity so I keep calling SubmitChanges().I tried manual transaction but after saving the address inside a transaction, the Address.OID (Address table's mapped prime-key) had a 0. attempting to use this newly added address while saving Courier in the same transaction threw an exception. If there is a way to get the primary key for entities created in a transaction that is yet to be commited, please mention that'll as well.
Web Forms :: Bitwise Operations Using Enums
Dec 22, 2010I have a page which is accessible only from Monday to Friday. If i try to open it on Saturday or Sunday it shouldn't.I have a column in my DB naming WorkingDays and iam storing Bitwise value
Monday=1,Tuesday=2,Wednesday=4,Thursday=8....
So the value in my DB is 31 which is equal to Monday to Friday.If i open the page on saturday how should i check?
How should i convert todays day to bitwise value and how should i compare with the DB value.
Web Forms :: Complex String Operations?
Feb 17, 2011Does anyone have a tricky tip to simplify my complex String Operations? I receive a string sequenze from database which i have to manipulate on RowDataBound of an GridView, put the String into several controls. The String looks like this:Here goes a introduction string with easy formating options such as {blue}blue text{/blue}
{CONTROL}{ParamsForControl|ParamsForControl}Text for Control 1{/CONTROL}
{CONTROL}{ParamsForControl|ParamsForControl}Text for Control 2{/CONTROL}
{CONTROL}{ParamsForControl|ParamsForControl}Text for Control 3{/CONTROL}
Some Text at the end.My first try was easy because I haven't had an introducing and a ending text, so I split the String at "{CONTROL}" extract the Parameters and replaced "{/CONTROL}" with nothing, works fine...But if i now split at "{CONTROL}" how to handle the text in front of and behind them... I do a lot of string.IndexOf and String.LastIndexOf operations but I hope there is an easier way...Result should be:
Introduction Text = Label
Control = UserControl
Control = UserControl
