I know that the datagrid control loops through a database table from the first row to the last, but I want it to loop from the last row to the first. How can I do that? Also I wanted to know how could I drop some rows according to my needs while looping from end to start, so that the datagrid only displays those rows that I need to display?
View 2 RepliesI have followed an online Microsoft tutorial that walks through building a Northwind.xsd that includes ProductsTableAdapter and a few other such table adapters (http://msdn.microsoft.com/en-us/library/aa581776.aspx).
Question: I now see a update column at the start of each row of the datagrid for AllProducts page. When I click update on a row and change the value of one of the non-primary fields (ex. Productname) and press Update, I get the following error:
The GridView 'GridView1' fired event RowUpdating which wasn't handled. How do I implement this event handler in VB? I know that when I implement using SQLConnection and use templatefields to bind each column I don't need to implement each event handler.
I have a datagrid with 5 columns, the fourth column consists of dropdownlists in each row.
1.) On the click of a button outside the datagrid, i have to loop inthe column and hide all the dropdownlists
2.) On the click of a button outside the datagrid, i have to select particular value in the dropdownlist for all the rows.(same value for all)
Recently, I am working on the datagrid, where I want to make datagrid as an input control where I would place textbox into a single cell, also the same way I want to include a datagrid control and calendar control? How would I do that?
View 6 Repliesthe problem is that , i have two dropdown in a datagrid one dropdown contain diffrent type of tax name and other contain the tax rate releated to that tax and i also have one buttton i datagrid which work to insert another row for next tax type.now problem is that as sooon as the new row inserted the both dropdown takes the values but as soon as i changed the selected index of dropdown taxname then then all the taxrate dropdown values has been changed with respect to the new one taxname values.
View 1 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 data gird in my page that my gird have checkbox and i have to loop on checkbox and if checked add too collection but i dont undrestand How can?? this is my DataGrid
<asp:DataGrid ID="grdData" runat="server" AllowPaging="True" AutoGenerateColumns="False" HorizontalAlign="Center" Width="100%" DataKeyField="ContactID" CellPadding="4" ForeColor="#333333" GridLines="None" OnDeleteCommand="grdData_DeleteCommand"> <itemstyle backcolor="#E3EAEB" /> <pagerstyle horizontalalign="Center" backcolor="#666666" forecolor="White" /> <alternatingitemstyle backcolor="White" /> <columns> <asp:TemplateColumn> <itemtemplate> <input id="chkIsCheked" type="checkbox" title="<%#DataBinder.Eval(Container.DataItem, "ContactID")%>" /> </itemtemplate> <asp:TemplateColumn HeaderText="کد مشتری" SortExpression=""> <itemtemplate> <center> <%#DataBinder.Eval(Container.DataItem, "ContactID")%> </center> </itemtemplate> <asp:TemplateColumn HeaderText="نام " SortExpression=""> <itemtemplate> <center> <%#DataBinder.Eval(Container.DataItem, "FirstName")%> </center> </itemtemplate> <asp:TemplateColumn HeaderText="نام خانوادگی" SortExpression=""> <itemtemplate> <center> <%#DataBinder.Eval(Container.DataItem, "LastName")%> </center> </itemtemplate> <asp:TemplateColumn HeaderText="ایمیل " SortExpression=""> <itemtemplate> <center> <%#DataBinder.Eval(Container.DataItem, "PrimeryEmail")%> </center> </itemtemplate> <asp:TemplateColumn HeaderText="موبایل مشتری " SortExpression=""> <itemtemplate> <center> <%#DataBinder.Eval(Container.DataItem, "PrimeryMobileNumber")%> </center> </itemtemplate> <asp:TemplateColumn> <itemtemplate> <a href="EmailSender.aspx?Email=<%#DataBinder.Eval(Container.DataItem, " primeryemail=")%>"> فرستادن ایمیل با این شخص </a> </itemtemplate> <asp:TemplateColumn> <itemtemplate> <a href="ContactsDetaile.aspx?ID=<%#DataBinder.Eval(Container.DataItem, " contactid=")%>"> دیدن جزئیات </a> </itemtemplate> <asp:ButtonColumn ButtonType="PushButton" HeaderText="حذف" CommandName="Delete"> <itemstyle backcolor="Red" /> <HeaderStyle HorizontalAlign="Center"></HeaderStyle> <itemstyle horizontalalign="Center"></itemstyle> </columns> <edititemstyle backcolor="#7C6F57" /> <footerstyle backcolor="#1C5E55" font-bold="True" forecolor="White" /> <HeaderStyle BackColor="#1C5E55" ForeColor="White" Height="30px" HorizontalAlign="Center" VerticalAlign="Middle" Font-Bold="True" /> <SelectedItemStyle BackColor="#C5BBAF" Font-Bold="True" ForeColor="#333333" />
check the VB behind code for any syntax errors.Unable to add new rows of data to a database using the DataGrid control.Compilation Error message is located at http://cforedu.com:View snap shot images of each line error at http://cforedu.com/snap.pdfThe VB code behind reads (revision 1.3):
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I would like to ask if there is any control act like grid to display records.The 'datasource' will be a customed class, this dataclass has List<T>, so I will populate each element by iteration into the grid.Any control can I use to work like a grid?The number of records will around 100.This control should also allow the user to select a record.
View 2 RepliesI have Datalist control in my application which contains one Gridview control as a child control in it. Now at the time of giving datasource to the child control, it gives object reference error.Note:I am binding the child grid at the time of ItemDataBound Event of Datalist controlMy code looks like :
Protected void Datalist1_ItemDataBound(object sender, DataListItemEventArgs e)
{
DataSet dsTest;
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I have 2 grids gvParent & gvChild I would like to filter gvChild when a row is selected in gvParent the linking fields are contractNo
I added a column for selecting:
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandName="Select"
OnClick="LinkButton1_Click" Text="Select"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
I know how to handle the filtering of the grid (create a criteria and set to rowfilter of the dataview) But, I dont know how to get the value of the column of the selected row.
I have a Gridview that I am using in a User Control. The grid loads great and my paging buttons that exist outside of the grid itself work properly. When I click my delete button inside the grid, I am getting an invalid postback message. How should I handle this? My control raises one event by the way.
View 22 RepliesI have Datagrid , i want to clcik on row and get data in textbox , but my textbox is FreeTextBox control,i tried to use javascript but work for asp.net control not working for freetext box control, how i can capture this code is sample code but it work for asp.net control but not working for my freetextbox
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Simply put... I want to duplicate the example found at this link, in VB.net rather than C#.
[URL]
I would like the selectedvalue of the dropdown to display additional data base on its selection in multiple text boxes.
I have tried using the DropDownList OnSelectedIndexChanged property, within a DataGrid EditiItemTemplate, but I cannot retrieve data from the selection. (AutoPostBack is "True"). I can however use a button onclick event to fire a "prre-defined" selection value.
I have a ListView which has Product Code,Desc, ColorCode, Size and Quantity as the columns as well as a checkbox
The listbox sits within a panel.
The user enters the quantity and checks the item(s) they wish to purchase. They accept their selection by clicking a button the sit within the ItemView
Once they have made their order and clicked the button I want to make the panel disappear and display the items on the page.
how to iterate through the Listview and how to grab the items and close the panel
I have 2 datagrid (using .net 1.1). I need to access column of second grid ( i need to make a column of second grid as disabled) when i click "Cancel" link button in First Grid. How can this be done?
View 7 RepliesI have a situation where I currently have a HyperLinkColumn control that I would like to modify to have a Label or simple text appear in the same column as the hyperlink. I tried setting this in the ItemCreated event but encountered the following error message
View 3 RepliesI also have a working application that popukates my datagrid with valid data rows from my DataBase. What I cant figure out is how to get each of the hyperlink lables to NAVIGATE to the correct and corresponding aspx page!
For example I have 5 rows in the datagrid and each row has its own hyperlink, each row contains contact and a short profile on 5 diffrent companies. For example when i click on let say row 3 that has (eg) Jimmy's Big Prawn's Restaurant listed in the the datagrid, I want to be navigated to a webform page dedicated to Jimmy's Big Prawn Restaurant.
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I am guesing it has to do with the bolded text above, but "details.aspx" is just an empty webform, I would like the hyperlink to point to (eg) JimmBigPrawnRestaurant.aspx.
I want to loop through gridviewrowcollection using LINQ but cannot go do it..nstead of doing:
foreach (GridViewRow gd in gdNarratives.Rows)
{
}
my datatble
name class mark address
a 1 23 c
b 2 23 d
c 3 56 4
how can i loop through cells in this datatable and bind with gridview.
I need to loop through a list of check boxes when the user clicks an export button.
The check boxes are in a panel and depending on what check box is checked I export the tables to excel.
Here is the code.
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What happens is it exports only the first checked box to excel and then stops.
What am I doing wrong? I need to export all the checked checkboxes to separate excel files.
I can't figure out what I"m doing wrong.. I followed this sample online at
http://www.4guysfromrolla.com/articles/091102-1.aspx to include a gridview in an email. But, it keeps throwing this error.. 'GridView' must be placed inside a form tag with runat=server.I've verified that the gridview is in a form, and there are no template fields in the gridview. Heres the gridview on my asp.net page..
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I am trying to add the checked rows into the database by looping through but im getting this error:
Object reference not set to an instance of an object.
Description:
An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
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Heres my add click event:
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I have two gridview. The first gridview with checkbox and if i check the checkbox in first grid that particular row will be binded to second grid. In second grid i have a textbox and dropdown. Have enabled pagination in both grids. When i check the checkbox in first grid i loop through all records in second grid to bind the previous values. Problem is since i have enabled pagination gridview row count only retuns current page row count. How to loop through all rows?.
View 5 RepliesI have a Gridview that has Paging enabled, and I need to loop through all the rows of the data. Therefore, I assume I need to loop through the datasource instead of through the Gridview.
I change the datasource of my gridview at various times when running.
How can I get a DataView of the GridView's current DataSource, so that I can loop through it?
Something like:
Dim dv as DataView = DirectCast(GridView1.DataSource, DataView)
except that this comes back as Nothing, probably because a Datasource isn't a dataview.