Gridview tasks edit templates

When you load in edit mode keep the version in viewstate or session or in some hidden field. Whenever it is refreshed or re-loaded match its new version with the one saved in session. However, it would not work in multi-user environment. Say for instance, User A and B load the same page. User B deletes row 5 while User A is still viewing the old data. Then User A clicks row 7 for editing. Can you suggest a workaround for this scenario? DataSource as DataTable; if dataTable!

SortDirection ; GridView1. Title: Re: disable edit for selected rows Name: G. So no decision can be taken to on that time. If you are following my implementation you can try i m not sure to call InstatitateIn method once again after databinding and may add check here in following case adding the button for edit, and the key value can be set in some session vaiable. Mohyuddin Date: AM Comment: Hi, Whenever a button is created in GridView and u want the fields info of the particular row in which it has been clicked, u must handle RowCommand event of the GridView.

This allows you to provide an event-handling method that performs a custom routine whenever this event occurs. Raising an event invokes the event handler through a delegate. For more information, see Raising an Event. The OnRowCommand method also allows derived classes to handle the event without attaching a delegate.

This is the preferred technique for handling the event in a derived class. I read your article about gridview, it's very good and I'm using in my application.

I created one button in gridview to show details in another page. My problem is that I'm not meeting a way to click in this button, to catch the field key of gridview and to send it to another page. Thank you, Milton. I'm trying to create a CheckBox templated column for a bit database field, I've read your post about it and I followed the steps you provided.

ToString ; checkbox. Title: Gridview Events not firing. Mohyuddin I have yet another question. None of gridview events are firing. I have all the "OnRow I can get the proper fields and data to show in the gridview, but when I click edit, it acts as if there is no data, though it keeps the caption. Anything you could tell me would be great UI namespace. Mohyuddin, Nice bit of code here.

Any way around this? Add checkbox ; Also regiter its binding handlers like we have set for textBox and lable and bind it in its definition. Add it for both ItemTemplate and EditItemTemplate for first set its enabled false Add these rows to add new column for it in constructor of the class in CreatTmpltdGrivView method as it has been called other coulmns.

Could you help me to overcome the problem.. It would be a greathelp for me What you have to do is add a 'case. When it will be claled implitely by the GridViewHandler contructor will add a GridView in ItemTemplate of the column instead of button , textbox or label etc.

Add childGridView ; In CreateGridView method add TemplateField as already one has been added for Buttons set its item,edititem and headertemplate through the gridviewhandler class contructor. I hope it will work.

Title: Foriegn Key fields Name: Neal Date: AM Comment: How could you set up something so that cells that are foriegn keys would give you a gridview of the table that it is referencing which you could then select an item to populate that cell? By the way I really think you have a great job here, it is really quite an elegant solution. Title: Foriegn Key fields Name: Neal Date: PM Comment: How could you set up something so that cells that are foriegn keys would give you a gridview of the table that it is referencing which you could then select an item to populate that cell?

By the way I really think you have done a great job here, it is really quite an elegant solution. Title: Re: Brilliant Name: G. All praises to Allah. Title: Re: briliant point pointed out Name: G. I have tried my level best to let the developers know how to take maximum benefit from ITemplate interface. Unfortuantely Eval method internally trims the name of property upto characters such as dot, dollar, hash, point etc.

Now the solution is we would call the GetValueProperty method direclty. It is simple do the following. DataItem, FieldName ; It works fine. These questions may contain any characters. Which is why it is not able to find anything. Can you tell me a workaround for this? Mohyuddin thank you for ur reply, there is no problem on the code at all.. Really appreciate. And you can easily get Edting, Inertion simultenously.

Mohyuddin, Thanks a lot for ur code, it really helps a lot. I don't know what's wrong, since I am not familiar with C , if u can tell me how to transfer this part, I really appreciate.. But make sure your all fields require it or add a condition based on the id of the field. ID; rfv. Add rfv ; Hope it works. The default behaviour of GridView is that there must be at least one row in table to make table displayable. You have noticed that Insert option like Edit and Delete is in each row.

And even if i provide Insert button globally, there must have been at least one empty row to be filled i. There are workarounds for it but they deviate from the core intention of the solution. You may add a fake row in table and do all insertion from GridView and later delete that row. When am opening a table which doesnt have any values. So it is impossible to open multiple multiple rows for editing.

Title: multiple Select Name: biren mohanty Date: AM Comment: thanks for this codeing for grid view updateing. Unfortuantely Eval method internally trims the name of property upto ponit. Title: OnDataBinding error Name: mikey Date: PM Comment: ive created a datatable which has a column header of ranged numbers like "0.

DataRowView' does not contain a property with the name '0'. 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. HttpException: DataBinding: 'System. DataItem, FieldName ; Line Line switch ItemType it seems the ondatabinding event handler is unable to recognize the column name "0.

So i will be better able to tell you what's happening. Please help me through this. Hope it will work. I am facing some problem on grdiview. Please help me in this. I am using ITemplate for this purpose. Everything is fine. Problem: 1.

When I am going to open a particular record in Edit mode, record is open as expected but Uppdate Event is not firing.

Sometime I am also getting Viewstate problem. Please Help me. I got it fixed. It shows that the FindControl method is returning null. Either there is no TextBox against the name of Column[5] or there is wrong column name. Check the column name while debugging and ensure that while creating templates this column was instiatated in TexBox.

NEt developer. Text; I always get error: Exception Details: System. NullReferenceException: Object reference not set to an instance of an object. Although I could not incorporate an IBindableTemplate example in this article as the the title is not primarily meant for that yet I have changed the current solution for ITemplate.

ITemplate can provide the required features under the current title. I changed the CreateTemplatedGridView code to use a BoundField for one of the columns instead of a TemplateField and sort became active for the column.

Title: Re: sorting the dynamic gridview Name: GArao Date: PM Comment: I created a readonly version of your sample code and here is where I'm adding the sortexpression property. Maybe this is not the right place because the column headings are created as literals instead of linkbuttons.

Header, Table. ColumnName, Table. Item, Table. Name ; ItemTmpField. Title: Re: sorting the dynamic gridview Name: G. Can it be done? Title: Re: give me replay of my question Name: G.

Mohyuddin Date: AM Comment: Would you please send me the error description Title: give me replay of my question Name: hitesh panchal Date: AM Comment: please replay me on my mail id. FindControl Table. Text;'' u convert in vb form and in vb. Text '' but i have occured error so u help me in form of send me solution on my mail id. Title: Re: update problem Name: G. Mohyuddin Date: AM Comment: Actually it has been left upto user to decide which column of the table, he decides to be the primary key field.

My code assumes it is in first column. I have not disabled it for it will not allow editing in case if the first column is not primary key field. Yet you may add samll piece of code to check primark key column dynamically and disable it. Title: Very Nice Name: Vikram Date: AM Comment: Hi, Thanks a lot for this article it was a good help to understand how to work with datagrids dynamically through code! Mohyuddin Date: AM Comment: Adam,i have not tested it for object data source but i think works fine with object data source as well, you need just to ensure that the InsertFlag has been set properly for using the edit mode for insertion.

The only problem is when clicking Insert it just performs an edit instead. Is there an easier way of inserting new records from within GridView? Thanks for your time. You saved me a lot of work. I appreciate this. I am planning to convert the code in near future. Fayyaz Bhai. I am very greatful to you for your prayers and best wishes. I have gone through the article in a skim.

Havent seen the details yet but i just wanted you to know that i am pleased to see your work buddy. May Allah always keep you progressing. It's a plausible effort. This is a big effort of you that you can do this. May Allah give you more much talent in this field.

I will try to convert the code into ASP. NET 2. Y keep it up Hope u can Convert this in VB. Not Logged In. Login AspAlliance. NET Tutorials Learn. Figure 1. Add BtnTmpField ;.

How Edit Operation works When a user clicks on the pencil image button used for editing, the GridView enters into Edit mode and the OnRowEditing event is fired that has been handled just to set the EditIndex of the GridView to new EditIndex explicitly, bind it and then save the NewEditIndex in session so that it can be used later when needed.

Happy GridViewing! Product Spotlight. Published: 22 Jan The columns displayed by the nested GridView control will not change. You have configured the nested SqlDataSource control, SqlDataSource2, to retrieve all the order data from the database and cache it locally.

When the nested GridView control is bound to the data, a filter is applied so that only orders related to the CustomerID value for the current row will be displayed. If using a code-behind page, right-click a blank area on the page, and then click View Code. Change the code for the RowDataBound event handler to read as follows:. In this version of the code, instead of setting a value in the SqlDataSource control's SelectParameters collection, you set a value in its FilterParameters collection.

However, all the data that is bound to the GridView control will be requested one time, when the first row is data bound. The data is cached for use with the remaining rows of the GridView control. This walkthrough has illustrated how you can extend the functionality of the GridView control to display related data by using nested GridView controls on an ASP.

NET Web page. You can also extend your application to enable data to be updated and deleted or to enable users to insert new records by using a DetailsView or FormView control. You might also use controls other than a TextBox control, such as a DropDownList control, to change a value. For more information, see the following topics:. Skip to main content. This browser is no longer supported. TimeRecord' row. ToString ;. DataItem [ "TaskCode" ]. Actually I juz want to create cascading ddl in gridview edit template, but I keep getting same error even I try the Mike's blog method or the link you send before.

ExtractValuesFromCell e. Yes, I can get the data and update the data if it is only independent dropdownlist in the edit template. I'm pretty sure the problem is I can't get the 2nd dropdownlist value , and I don't understand why it always show the error:. Unable to cast object of type 'Library.

TimeRecord' to type 'System. That is related to your datasource. My point is: try to make it work in the simple datasource. Then to investigate why it is not working in your case. Please check Rex Lin's early reply in this thread.

I'm still investigate why it can't run in my application, if you got any ideas, please advise me anytime! I delete the databound then everything work except I can't make the dropdownlist item value selected the value b4 click edit button ,it always select the 1st item in the dropdownlist when I click on the "edit" button. I've try your code, it work fine when it is just 1Manufacturer for 1Model, once 1 Manufacturer have 2Model, it will have error:. The content you requested has been removed.

Ask a question. Quick access. Search related threads. Remove From My Forums. Answered by:. Archived Forums. Web Forms Data Controls. Sign in to vote. Monday, March 12, AM. DataBind ; drp. NamingContainer; if row. Monday, March 12, PM. Not "text change" event. The SelectedIndexChanged event of the dropdownlist. If Auto postback is true for dropdownList1 then each time a different item is selected it will set the selected item of dropdownList2 to what ever you put in there.

In my example above I changed the selectedValue to 2 that caused it to selected the item that has a value of 2. You can also change the selectedItem or the selectedIndex. The selectedIndex starts at 0 so if you have 5 items in your list and you want to select the first one you would write:. But you can click on the gridview. Then Edit Templates. You should see your drop down lists so you can double click it to open the code and it will create the selectedIndexChanged method for you.