I'm making the switch from vb.net to c#, and am just trying to bind some data from a reader in my c # codebehind, but no matter what, the gridview always skips the first row returned from my stored procedure. What am I doing wrong?
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I have a GridView bound to a DataTable. The DataTable has a Deleted column that holds a boolean value describing whether the row is logically deleted; I need the row to physically remain in the table. Is there a way to skip over rows whose Deleted columns are set to true in the GridView's onRowDataBound event? The closest I could get is marking the row's visibility property to false, but this does not help me because it throws off paging and the GridView's alternating row color.
View 7 RepliesI am creating an Asp.net web site which will support dynamic data. When I am creating a dynamic web site from Scratch (from template in VS) all is working fine. But when I am trying to add dynamic entity (.edmx) file and running the application I am getting following error
"The method 'Skip' is only supported for sorted input in LINQ to Entities. The method 'OrderBy' must be called before the method 'Skip'. "
How can I bind an object to a dropdown list or gridview ? I am writing an application where my code behind calls an instance and bind the list to either dropdown or gridview.For example:
.aspx page: default.aspx
<asp:dropdownlist id="dd1" runat="server" />
Code Behind: default.VB
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I have multiple questions about doing gridview in code behind.I used this code to fill my gridview at runtime.
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My questions are:1. How to edit the column headers? When I bind the database to my gridview, obviously, the column headers of the database will be binded. For example "First_Name", I want to edit the column so I can omit the underscore.2. How to edit the column width?
I have a datalist control on my aspx page which is bind with a datasource. i want to skip / hide first row when bind. is it possible? if so then how it can be done.
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This is my gridview with an item template, I have NO boundColumns.TO get data to codebehind I use Eval(" <Field name >"), but this returns something to a control. Not making data available for codebehind code for general use.
Question: As I have no boundcolumns I dont know how to get data to codebehind to to use as I wish??
So my question is more in relation to what people consider to be the best practice and why:
I've been dropping literals into pages and repeaters and binding them in code behind for a while. Is this considered bad practice?
ie:
ASPX Page:
<asp: Literal id="litTextToInsert" runat="Server" />
Code Behind:
litTextToInsert.Text = objData.MyText;
OR (repeater):
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I personally dont like doing this as i find it makes it harder for me to know if someone changed the field name, or mis typed it during development - the other way you won't know until the page loads.
With the strongly typed version if something changes in your DAL etc the build will break - letting me know I've messed up.
Why do so many people appear to use weakly typed code in ASP.Net (in examples, MVC, etc)?
Am i missing something?
Is there a way to turn this
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First, what I am showing here works fine, and I know how to do this if the nested control comes from the same bound table. I could leave it at that, but I don't like SQL code in my aspx page, and want to move it. I'm keeping it simple here, but I can move it to a data access layer later on..... for now, I want to understand what's going on when the page loads and the nested control is rendered and populated. WHAT I LEARN FROM THIS WILL BENEFIT ME ACROSS THE BOARD - NOT just for this instance!!!
My question is, how to grab the SQL query from the aspx page for the NESTED control and move it to the codebehind. I'd LOVE to also move the Selected Value parameter if possible, but mainly want to get the SQL out of the page. I KNOW HOW TO DO THIS for a GridView or any control, but I DO NOT know how to do it for a NESTED CONTROL from a different table - i.e. WHERE it fires (on GridViewEditing or GridViewUpdating or PageLoad....) so I can put in the SQL where it belongs.... and I'm PRETTY darn SURE this can be done without a 'foreach' loop. For discussion's sake here, imagine
1. DATABASE: simple table with employee_ID, employee_name, employee_city as fields
2. DATABASE: simple table containing all cities (city, cityval)
2. simple GridView that displays these 3 fields in same order ON VIEW
3. Template field for city. On PAGE LOAD, this is a simple label bound to the 'city' field. HOWEVER - On EDIT (with edit button), the field changes to a nested DropDownList that is bound to the 'city' table, NOT to the employee table.
4. Selected value is the current city for employee The PROC you see here in the edit item SQL is actually SELECT * FROM [cities] ORDER BY [city_name]
<asp:GridView ID="grdEmployee" runat="server" AutoGenerateColumns="False"
CssClass="grdE" DataKeyNames="employee_ID"
ShowFooter="True">
<Columns>
<asp:BoundField DataField="employee_ID" HeaderText="ID" ReadOnly="True" />
<asp:TemplateField HeaderText="Employee Name">
<ItemTemplate>
<asp:Label ID="lblEmployeeName" runat="server" Text='<%#Eval("employee_name")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEmployeeName" runat="server" Text='<%#Eval("employee_name")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="City">
<EditItemTemplate>
<asp:DropDownList ID="cboCity" runat="server"
DataSourceID="SqlDataSource1" DataTextField="city" DataValueField="cityval"
SelectedValue='<%# Bind("employee_city") %>'>
</asp:DropDownList>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="Data Source=XXXXXXXXXXXX;Initial Catalog=xxxxxxx;Integrated Security=True"
ProviderName="System.Data.SqlClient"
SelectCommand="QUERY_CITY" SelectCommandType="StoredProcedure"></asp:SqlDataSource>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblEmployeeCity" runat="server" Text='<%# Bind("employee_city") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
ALL I want to do is move the SQL Query in the EDIT template above to the code behind. I just don't know WHERE or WHEN in the code this fires and how to handle it when the table is different from the original GridView table. AND the cboCity.SelectedValue, if possible.
I've been trying to accomplish this for days without joy. I need to update a specific cell in a gridview with some static text when a button click that is outside the gridview. The cell i need to update is a template field.
View 10 RepliesI have a method I want to use on two gridviews which contain different information, ideally i want to do an if statement, something like
if (GridView.ID = "GridView_ABC") {
// do this
}
else if (GridView.ID = "GridView_2") {
// do this
}
I have a datalist where I am displaying the Tickets for any conference. Now the posblem is that on the first page I need to display some custom data and attendees information so I need to start tickets from the 2 row and same needs to be done on the footer.I have used datalist so that the data looks like actual ticket. If something else is possible, which is a better solution please elt me know .
e.g.
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is it possible to have a button that points to a method you have defined in codebehind, that passes in a record from the row as a parameter? for example, id.something like:
<asp:CommandField ButtonType="Image" EditImageUrl="/editbutton.jpg" ShowEditButton="True" OnClick="editRow(int id)"/>
it wouldnt necessarily 'edit' this row. i'd like it to instead load an editable grid corresponding to the id passed.
a Gridview contain itemtemplate(using code behind) and
Textbox with random id
how to access the the textbox id in code behind
I have a set of dataset with different column retrieved from DB. I need to present the datasets in one GridView (or other ListView etc...) without specifying the column_header. It should present automaticly since the GridView is bind to the DataSet.
In additional, I want this GridView to handle multiple rows edit and update the dataset, idealy, show data in textboxs in initially.How could I set the GridView to edit_model without hardcode column_header and textboxs in 'itemtemplate' or filed.
How could I achieve the bulk edit and update, so that I can assign 'mydataview1.table' to the dataset.
how can i set DateFormatString inside GridView column in codebehind page?
View 6 RepliesI have a problem with databinding an <a href> link when there's no image available for the link.My intention is to display a link with <a href=...> when there is an image available and skip the <a href...> if there is no image available but just display the image.i've tried the following but no result:
<%# DataBinder.Eval(Container.DataItem,"adImage")
== "noimage.gif" ? <a
href='/displayad.aspx?adc=<%#
DataBinder.Eval(Container.DataItem,"id")%>'
title="(c)"
><img src='DataBinder.Eval(Container,"adImage") /></a> : <img src='DataBinder.Eval(Container,"adImage") /> %s
I have a XML file which contains a list of items/elements:
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I can bind the data into a gridview. However, only the attributes are displayed(which is: category and ID). I need the elements to display out too (which is: Name,Description,Latitude and Longtitude).
Would anyone be kind enough to solve this problem for me?
And is it possible to populate a drop down list in using the same XML file? As in populating the category in the drop down list.
I want to bind gridview at runtime on button click.
I have use AJAX toolkit control, it's reference on that page(also script manager and update panel controls required for AJAX controls). When i remove all these from my page gridview data binds successfully. But when i use these controls and AJAX library reference, data is not binding to grdiview control. But at debug time it shows row count to 2 which is exact count which i wants.
here is my binding sample.
AMCGrid.DataSourceID = "AMCFILLAll"
AMCGrid.DataBind()
here AMCFILLAll is my sqlDatasource.
i m binding data to Gridview using LinQ i need to sort the Gridview i have no idea how to sort cs i m using LinQ to Bind data with Gridview at Button Click.
View 2 RepliesI have a grid in 1st page and one link in it.If i click that link it should open a popup which has a grid and it should bind data according to the row information.In my grid its displaying columns evrything in popup but data is not displayed.
View 5 RepliesI need to manually page a GridView based report, i.e. add a second page and GridView, when the height of my first GridView exceeds a limit. Is there a way I can determine the height of the GridView while data binding?
View 4 RepliesI am converting a VB.net project to c#. I am trying to bind an xml file to a DataGridView, however DataGridView does not have a DataMember property. How do I set the Datamember in C#?
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want to achieve this below functionality
http://demos.mcmscontrols.com/ASPNET/Grid/Examples/Hierarchy/TwoTablesAtLevel/DefaultCS.aspx
I have my code snippet below for the xml shown. I am not able to get this working.
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