I have a GridView with a delete button next to each row. When I click the delete button, I want it to delete the file listed in the 'News_Image1' column of the table. However when I try and recall this data by using e.Values, it doesn't work, and returns nothing. I have also tried e.Keys and e.Command.Parameters. My code is as follows:
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How can I get data from a specific column in the record that I am deleting in VB?
I want to delete row data in gridview with rowdeleting, without the use sqldatasource, objectdatasource, LINQ, etc ...
View 5 RepliesI have a rowDeleting even on my gridView. When I click Delete link, the Rowdeleting is not fired. I checked my aspx...and I have it there...I dont see any problems there..bu still when I click delete, my page is refreshed without calling RowDeleing event.
View 20 RepliesI have a GridView and provide the user with sorting, paging, editing, deleting and selecting functionality.
When the user klicks the delete-button in the GridView, the Row-Deleting event is triggered, the record is correctly deleted from Database after user confirmation. Then the Row-Deleted event is triggered and afterwards the Row-Deleting event is triggered AGAIN, resulting in a second user confirmation and a Delete-instruction running into void if the user confirm again the question.
Between the Row-Deleted event and the second Row-Deleting event I saw the GridView binds his data again (comprehensible because it wants to provide an updated view to the data), maybe somwhow there is generated or provoced the second Row-Deleting event.
My GridView:
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The Code-behind:
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what triggers the second Row-Deleting event?
I manually added a textbox to a cell in my gridview in the RowDataBound event as seen here:
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I want to find out the rowstate of a gridview in RowDeleting event. Also I want to disable my delete linkbutton in the gridview when in edit mode.
View 10 RepliesI'm creating a confirm delete like popup with an iframe to use along with a gridview. When you click delete on a gridview row, the iframe shows up and asks if you would like to delete the associated image as well from the server. It works perfectly the first time I delete a row. After that whenever I click select or edit on a new row, it calls the rowdeleting event from the last deleted entry every time. I'm stumped.Here's the Sub:
'// Event that Occurs when the Delete Button is Clicked //'
Protected Sub Confirm_Delete(ByVal sender As Object, ByVal e As GridViewDeleteEventArgs) Handles GridView1.RowDeleting
Dim file_name As Array = Split(GridView1.Rows.Item(e.rowIndex).Cells.Item(10).Text, "/")
If file_name.getLength(0) = 1 Then
file_name = Split(GridView1.Rows.Item(e.rowIndex).Cells.Item(10).Text, "")
End If
Dim fn As String = file_name(file_name.getLength(0) -1)
fn = replace(fn, ",", "%2C")
fn = replace(fn, " ", "%20")
Dim url As String = Me.Master.get_root_url & "CrimeBulletinProject/ConfirmDelete.asp?img_list=" & fn & "~!"
confirm_delete_frame.Attributes.Add("src", url)
confirm_delete_frame.Attributes.Add("style", "display: block; left: 50%")
End Sub
Here's the GridView:
<!-- // Main Data Table Section // -->
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" BackColor="Black" BorderColor="#E7E7FF" BorderStyle="None" BorderWidth="1px" CellPadding="3" DataKeyNames="ID" DataSourceID="ArrestsDB" CellSpacing
= "1" GridLines="None" CssClass = "GV_Row" >
<PagerSettings Mode="NumericFirstLast" Position="TopAndBottom" />
<RowStyle CssClass = "GV_RowStyle" />
<Columns>
<asp:CommandField ButtonType="Button" ShowDeleteButton="True" CausesValidation = "True"
ShowEditButton="True" ShowSelectButton="True" HeaderText="Options" />
<asp:BoundField DataField="ID" HeaderText="ID" InsertVisible="False"
ReadOnly="True" SortExpression="ID" />
<asp:TemplateField HeaderText="Photo">
<ItemTemplate>
<img class = "GridViewImg" onclick = "popup_EnlargePhoto_EditForms(this.id)" id = "<%# DataBinder.Eval(Container.DataItem, "FileNumber") %>, <%# DataBinder.Eval(Container.DataItem, "LastName") %>, <%# DataBinder.Eval(Container.DataItem, "FirstName") %>"
alt = "<%# DataBinder.Eval(Container.DataItem, "LastName") %>, <%# DataBinder.Eval(Container.DataItem, "FirstName") %>" src = "<%# DataBinder.Eval(Container.DataItem, "PhotoLink") %>"></img>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="FileNumber" HeaderText="File #"
SortExpression="FileNumber" />
<asp:BoundField DataField="LastName" HeaderText="Last Name"
SortExpression="LastName" />
<asp:BoundField DataField="FirstName" HeaderText="First Name"
SortExpression="FirstName" />
<asp:BoundField DataField="MiddleName" HeaderText="Middle Name"
SortExpression="MiddleName" />
<asp:BoundField HeaderText="DOB (mm/dd/yyyy)" SortExpression = "DOB" DataField = "DOB" DataFormatString = "{0:MM/dd/yyyy}" />
<asp:BoundField DataField="Charge" HeaderText="Charge"
SortExpression="Charge" />
<asp:BoundField DataField="OfficerInCharge" HeaderText="Officer"
SortExpression="OfficerInCharge" />
<asp:BoundField DataField="PhotoLink" HeaderText="Photo Link"
SortExpression="PhotoLink" />
<asp:BoundField DataField="LocationOfArrest" HeaderText="Location Of Arrest"
SortExpression="LocationOfArrest" />
<asp:BoundField DataField="AdditionalInfo" HeaderText="Additional Info"
SortExpression="AdditionalInfo" />
<asp:BoundField DataField="Zone" HeaderText="Zone" SortExpression="Zone" />
<asp:BoundField DataField="DateOfArrest" HeaderText="Date Of Arrest (mm/dd/yyyy)"
SortExpression="DateOfArrest" DataFormatString="{0:MM/dd/yyyy}" />
<asp:BoundField DataField="DateAdded" HeaderText="Date Added (mm/dd/yyyy)"
SortExpression="DateAdded" DataFormatString="{0:MM/dd/yyyy}" />
</Columns>
<FooterStyle BackColor="#B5C7DE" ForeColor="#4A3C8C" />
<PagerStyle BackColor="#E7E7FF" ForeColor="#4A3C8C" HorizontalAlign="Center" />
<SelectedRowStyle CssClass = "GV_SelectedRow" />
<HeaderStyle CssClass = "GV_Header" />
<AlternatingRowStyle CssClass = "GV_AltRowStyle" />
</asp:GridView>
I would like to know how i could display data from an itemtemplate or any other form views/data-bound controls without having it render in tables? i know theres control adaptors, but is this reliable and will it work with asp.net 3.5?
View 4 RepliesHow to display empty GridView to insert new record if no data retreived for some record on the result from data table?Actually i am trying to give a user an option to add recrod from Gridview. On result of some query it is perfectly displaying data and a footer row with the insertion textbox but when there is no data in the gridview it is not displaying. It should display with footer having insert textbox.
View 5 RepliesI have a datagridview control that I'm using to display cache data to the end used on a web form. The issue that I'm having is that every time I re-run the application, and the cache data is re-generated... it loads duplicate data that's being displayed to the end user. I can't seem to figure out how to keep this from happening.
What I would like to have happen is that only unique data rows be returned and cached for the end user. Unless there are new data rows on the database that needs to be included in the cache data results...the previous data results should not be duplicated. I've tried to change a few properties on the datagridview control, but nothing seem to keep this from happening.
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I have a listview control bound to an SqlDataSource. As part of the formatting I want to add a title to the data returned from my database. For instance if the data base returns a phone number I want to add 'Tel.' first. However I do not want to diplay this
title if the datafield is empty. Here is what I have done so far.
<ItemTemplate>
<asp:Label ID="BusinessLabel" runat="server" Text='<%# "Tel. "+Eval("Business") %>' CssClass="TeleStyle" />
Or This:Tel.
<asp:Label ID="BusinessLabel" runat="server" Text='<%# Eval("Business") %>' CssClass="TeleStyle" />
</ItemTemplate>
Business is a phone number. If the data field contains a number I get: Tel. 1234 123456. If the field is empty I get Tel. If Business is null I want nothing dsplayed, how do I do this?
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 103 column in database 1 column is id, 1 is user ,1 datetime, 100 button on webpage 1 textbox to input value , button1 clicked then value in textbox will insert into database with user:=user.identity.nam datetime=datetime.now colum4 will get value from textbox......button2 for colum2 and buton100 for column100, if i use dataset i need 100 datataset, some other way to solve it ??
View 2 RepliesI would like to add a column in my datagridview that takes the value from the database and asigns it to the text of a linkbutton or make it a hyperlink. i know how to handle getting the value from the row but dont
know how to make a value a link, or set the text to a link button
in one on my page i am using to add the data from popup window to grid view without using the backend means databasethis is my popup window code
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I would like to dropdown box to show only starting from second row of the table. How to use data reader to do it?
View 9 Replies.I have a search page where I would search for an item and it would dispaly the results in a gridview...
I have allowed paging and set page size to 10..now I can see the 10 results in the first page and also see the page numbers at the bottom of gridview. But now when i click on the page 2, the method gridview_pageindexchanging is triggered but the result set is not dispalyed. My code is as below..
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i understand that the data is not binding in the GridView1_PageIndexChanging method..I do not know how can I make data bind..
I have a many to many table in my database called PeopleLanguage
PeopleId, pk and Languags pk each go to the own table People and Language
I know make a method call with my objectdatasource GetPeopleByLanguageId
This returns the languages that the selected person speaks and has a select
query also to lanaguageTable to get LanguageName.
I now print out the results in a datalist that is binding to LanguageName.
What i want to do is show the languages in a horizontal format with a comma after each one.
At the moment if there are 3 languages it shows each one on a seperate line / if I make it horizontal
layout I still dont get a comma. Perhaps I can use a repeater?
I am trying to debug one of the project in which i need to show the data for one of the particular cell in two lines.
This Repeator control Exists in a user control and aspx is calling this User control for displaying the data.
Here is how my code looks:
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I have loaded up a gridview object with data. I have turned on Edit on the grid. It lets me edit the data, but I also want to put some code to check for correct data in each field. I tried to assign a requiredfieldvalitor, comparevaliditor but they don't work. Is there an event I can capture to fire up some code before the grid sves my data?
View 3 RepliesThis is my code and i am only able to edit the one data under the category school.But what i nd is to edit the other categories like the name,email...etc..how do i modify my code in the update command.Another thing is to delete the data how do i do that?
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I'm trying to build a chart in my application which will act as a client for an ASP.NET 3.5 web service that I created. The error I get is as follows:
Series data points do not support values of type System.Data.DataViewManagerListItemTypeDescriptor only values of these types can be used: Double, Decimal, Single, int, long, uint, ulong, String, DateTime, short, ushort.
I've tried various ways to resolve this but can't. This error points at the
chtStats.DataBind() line in the code below:
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I'm new to ASP.net 3.5 and trying to create a test site so I can figure out how to use it in the real world. I have created a FormView (Formview1) based on a Client table using Linq Data Sources. The page includes a DropDownList to lookup Clients. I have added a list option (<asp:ListOption value="" Text="(Select Client)" and set AppendDataBoundItems=true so my added option is displayed. I decided to try to use Formview with only the Edit and Insert Modes, and I have set the Default Mode = Insert. When you open the page, a blank Client record is displayed.
The Client record contains serveral lookup fields and they have drop down lists for each. When I select a client from the Client DropDownList, is get the following message 'ddlClientType' has a SelectedValue which is invalid because it does not exist in the list of items I had this problem before and decided the best way to handle this (in the interim) was to turn off foreign key constraints for each of the lookup fields (e.g. ClientType) in SQL Server. That worked for 2-3 days. Now the problem has started again.
When I develop in other applications, I would simply create a lookup data source based on a Union Query with the actual data and a blank record. How can you do this using Linq DataSources. Can you get access and modify the queries?
I am displaying selectable rows in a gridview. The selected row uses a stored procedure to display all the fields in a formview when the Select button is clicked.
Only a small subset of the fields in the selected row are editable. When I click the Edit button only the EditItemTemplate fields show up, the read-only fields from the ItemTemplate disappear. I want the read-only rows to remain visible with the editable rows.
If I include the read-only fields in the EditItemTemplate, I get an error when I click Update on the FormView. The error states that there are too many parameters being passed to the stored procedure to update fields. How can I continue to show the read-only fields with the editable fields on the FormView and avoid getting the input parameter error on the stored procedure for the Update command?
I've been using the Item Inserted event for my data controls, such as details view. I'm wondering if there are advantages to doing this with the data sources instead of the data control. There is a lot of overlap in the events provided by these two types of controls. Are there advantages to using the events raised by the data source instead of the ones raised by the data control itself. Should I be using the events raised by the data source instead of the control used to enter the data?
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