I have the following code that gives me the error "'DataSource' is not a member of 'gridview'.".
what's wrong here? I'm working in the page load of my aspx page
[Code]....
I am binding SQL data to a GridView. The GridView's DataKeyNames property is set to the SQL column called "utID"
I know that within the SQL results, some of the utID values are NULL. After databinding to the GridView, I need to enumerate through the GridViewRows an read the DataKey values. However, when I try this I get the following error:
No default member found for type 'DBNull'. I am using the code below.
What object types are stored within DataKeys (I thought it was just integers or strings)
How to handle a NULL datakey value to prevent this error occurring?
I don't want to use Try Catch because it's too much of a 'hack'
[Code]....
I have created a function that is called when a user wishes to upload a file to the database. The problem I am having is that it won't write the files to the database anymore. This function used to work before I implemented a treeview (which connects to the database). I am struggling to see how the treeview could have cause the file upload to stop working (the error may not even be related to the implementation of the treeview).
The error message I am receiving is: 'Update' is not a member of 'CMS.SiteFilesDSTableAdapters.SiteFilesTableAdapter'.
The code for the upload function is:
<System.ComponentModel.DataObjectMethodAttribute(System.ComponentModel.DataObjectMethodType.Insert, True)> _
Public Function AddSiteFile(ByVal FileData As Byte(), ByVal FileName As String, ByVal FileDescription As
[code]....
It is throwing the error at: Dim rowsAffected As Integer = Adapter.Update(SiteFiles)
' Return true if precisely one row was inserted, otherwise false
Return rowsAffected = 1
EDIT: I managed to solve this problem by following:
http://www.asp.net/%28S%28pdfrohu0ajmwt445fanvj2r3%29%29/learn/data-access/tutorial-69-cs.aspx
Basically, I had used an Inner Join to gather all the fields, and table adapters don't seem to like them.
INSERT INTO [SiteFiles] ([FileData], [FileName], [FileDescription], [FileType], [FileCreated], [FileCreatedBy]) VALUES (@FileData, @FileName, @FileDescription, @FileType, @FileCreated, @FileCreatedBy)
I have a serious problem since yest, i have a grid and i have to pass parameter to datasource of grid during run time...i tried this way in grids it worked.yest wen i try to create a new grid and pass parameter thru onselecting method of grid. i faced problem.
here's my code:
[Code]....
when i run this code im gettin error that SQLDATASOURCE1_selecting is not a member of asp.webform1.aspx..
I have two member roles at my project:
1.) Administrator
2.) Member
From the toolbox in Visual Studio 2008, I have dragged and dropped the create user wizard into the stage. I aim that a guest can register itself and automatically join the "member" role. Not the role "administrator". How can I do that?
when my application start, browser stops saying that onRowUpdating = "GridView1_onRowUpdating" is not a member of asp:default.apsx.
How can I fix this problem?
I'm using VisualStudio 2010.
Here is the html:
<asp:GridView ID="GridView1" runat="server" AllowPaging="True"
AllowSorting="True" AutoGenerateColumns="False" CellPadding="3"
DataKeyNames="codice" DataSourceID="SqlDataSource1"
EmptyDataText="Non ci sono dati da visualizzare." Font-Names="Verdana"
Font-Size="Small" ForeColor="Black" GridLines="Vertical" BackColor="White"
BorderColor="#999999" BorderStyle="Solid" BorderWidth="1px" OnRowUpdating="GridView1_OnRowUpdating">
How do we get Text as a member of 'System.Data.SqlClient.SqlParameter'
See example of 'System.Data.SqlClient.SqlParameter', below:
[Code]....
Here is the snippet code to insert the Text as a member of 'System.Data.SqlClient.SqlParameter'
[Code]....
Argh.. I've run into thei before,but can't remember how I solved it.I have a gridview with a button in a template field.I've added an event to the button,but am getting the dreaded 'RowIndex' is not a member of 'System.EventArgs' error.
I'm trying to grab the value of a label in the gridview for the row that is selected when the button is clicked.Should I be using something other than e.RowIndex?
[Code]...
I'm trying to retrieve selected DataKeyValue and I'm getting this error.
[Code]....
I am trying to display in the Gridview the Full Name of a person.
I have MemberFirstName and MemberLastName as fields in the Table.
Is it possible to display the FullName based on the member fields of the table ?
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. review the following specific error details and modify your source code appropriately.
Compiler Error Message: BC30456: 'Eval' is not a member of 'ASP.InsertLTAS_aspx'.
Source Error:
[Code]....
Line 99: <asp:TemplateField HeaderText="Mvalue" SortExpression="Mvalue">
Line 100: <EditItemTemplate>
Line 101: <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("Mvalue") %>'></asp:TextBox>
Line 102: </EditItemTemplate>
Line 103: <InsertItemTemplate>
Seems to be having problems with my databind control that i have set in my gridview with edit and delete options?
I am using VS2005, and a newbie at table adapters, DAL & BLL. I have a single dataset (in DAL) and 2 classes (in BLL) named Class1.vb and Class2.vb.
When I try to call a function from Class1 within Class2 I get the error "Reference to a non-shared member requires an object reference".
Here is a sketch of my code structure:
[Code]....
I am making a website to store invoices so i can mail them to clients. So i got a table for clients, invoices and one with invoice products/services. When an invoice has no products/services added to them and it returns null i get the error "the null value cannot be assigned to a member with type System.Decimal which is a non-nullable value type."
I just started with linq. Before i always used mysql. Mostly i just had to call data from 1 table so forgive me if my linq query isn't really correct.
Dim invoices = From i In db.invoices _
Group Join p In db.products On i.id Equals p.invoiceId Into invoiceProducts = Group _
Select New With {i.client.naam, i.titel, (From iP In invoiceProducts Select iP.prijs).Sum}
i show the client's name, the title of the invoice and the total amount the clients will need to pay for products and services.
I have following model class:
public class WebModel
{
public List<ArticleModel> Articles { get; set; }
}
public class ArticleModel
{
public int ID { get; set; }
public double ValueParam { get; set; }
}
Then I have the controller with the two actions:
[Authorize]
public ActionResult Index()
{
WebModel model = new WebModel();
ModelConverter.ConvertToModel(model, controller);
return View(model);
}
[Authorize]
[HttpPost]
[ValidateInput(false)]
public ActionResult Index(WebModel model, string saveButton)
{
ModelValidation.ValidateWebModel(model, ModelState);
if (ModelState.IsValid)
{
return RedirectToAction("Create", "Article");
}
ModelConverter.ConvertToModel(model, controller);
return View(model);
}
And this is my view:
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Web.Models.WebModel>" %>
<asp:Content ID="Content1" ContentPlaceHolderID="MainContent" runat="server">
<%var controller = Session["controller"] as Web.Code.SessionController; %>
<%Html.BeginForm(); %>
<div>
<table width="100%">
<%foreach (var article in Model.Articles)
{%>
<tr style="text-align: right">
<td>
<%:Html.DropDownListFor(m=>m.Articles.FirstOrDefault(f=>f.ID == article.ID).ID, new SelectList(controller.CurrentProdukt.Articles.AsEnumerable(), "ID", "Name", article.ID)) %>
</td>
<td>
<%:Html.TextBoxFor(m => m.Articles.FirstOrDefault(f => f.ID == article.ID).ValueParam)%>
</td>
</tr>
<%} %>
</table>
</div>
<table style="width: 100%">
<tr>
<td>
<input type="submit" name="saveButton" value="Save" />
</td>
</tr>
</table>
<%Html.EndForm(); %>
</asp:Content>
If I press the submit button, I get to the second action method in the controller (the one with the HttpPost attribute). In this action, the object model itself is not null, but the "Articles" list inside is null.
I am using a gridview with sqldatasource. How to get back the datasource in the codebehind ?
View 2 RepliesI am familiar with populating a gridview with data. I am able to bind the Data pulled from the database into the gridview
gridview.DataSource = myDataTable;
gridview.Databound.
If I write the following code, teh gridview will no longer show the data
gridview.DataSource = null;
gridview.Databound.
My question is , I want to make the same thing with a user control that contain a gridview. when I use the user control in an aspx page, I am able to populate it with data, but when I try to make this code, the Datasource does not show, instead, I see .DV. So I tried this code but then , I do not see DataSource property instead I see DV (DataView), when I put .DV = null, I get an error message that the object is not in existed. any idea how to clear the user control gridview from its data.
I have a GridView and can swap the datasource just fine with code. However, The GridView also has a TemplateField with a dropdown connected to a different datasource. How can I swap that one with code too? I don't see how to drill down to find it. I've found stuff on line about accessing the TemplateFields with code, but it seemed to complex for the simple task I am trying to do.
View 3 Repliesim using an excel file as a datasource for my gridview...i can pull all the data into the gridview fine. i am now hoping to allow the user to update the data in the excel file through the gridview. is it possible to update the excel file in this format i.e. allow the user the read/update the excel file as if its a database. i see some references in google that its not possible to update the excel file as the writeout causes problems. does anyone have this working...or should i look into trying to use another datasource.
i was hoping to use an excel file as the app is on a shared server and it would be handy just to have the excel file in the app folder as there is not much data involved.
I have read many, many articles about this issue and still cannot fix my gridview. It is a simple datagrid with a couple readonly fields and then one field is available for edit. I cannot get the new value the user enters into the grid for update... My grid can delete and cancel. I am dynamically binding and know that I have to handle this but I cannot get teh changed quanitity value out of the grid.
This is what is failing...
'The value that changed is blank but I can see the read only values here!!
hfQuantity.Value = gvCart.Rows(e.RowIndex).Cells(2).Text.ToString()
Here is my gridview:
<asp:GridView
ID="gvCart"
runat="server"
AutoGenerateColumns="False"
EnableTheming="False"
GridLines="None"
DataKeyNames="PRDID">
<Columns>
<asp:BoundField
HeaderText="Vendor Number"
DataField="VNDNO"
ReadOnly="True">
</asp:BoundField
<asp:BoundField
HeaderText="Product ID"
DataField="PRDID"
ReadOnly="True"
HeaderStyle-Width="90px"
ItemStyle-Width="90px">
</asp:BoundField>
<asp:BoundField
HeaderText="QUANTITY"
DataField="QUANTITY"> </asp:BoundField>
<asp:CommandField
ShowEditButton="True"
HeaderStyle-Width="60px"
ItemStyle-Width="60px"
CausesValidation="false">
</asp:CommandField>
</Columns>
</asp:GridView>
Code behind:
Private Sub gvCart_RowEditing(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewEditEventArgs) Handles gvCart.RowEditing
gvCart.EditIndex = e.NewEditIndex
gvCart.DataSource = Session("CartTable")
gvCart.DataBind()
End Sub
Private Sub gvCart_RowUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewUpdateEventArgs) Handles gvCart.RowUpdating
'Find the row that was clicked for updating.
Dim row As GridViewRow = gvCart.Rows(e.RowIndex)
'Change the edit index to -1
gvCart.EditIndex = -1
If row IsNot Nothing Then
'The value that changed is blank but I can see the read only values here!!
hfQuantity.Value = gvCart.Rows(e.RowIndex).Cells(2).Text.ToString()
Dim myDatatable As New DataTable
'Find the Control in the grid.
myDatatable = Session("cartTable")
For i As Integer = 0 To myDatatable.Rows.Count - 1
If e.RowIndex = i Then
myDatatable.Rows(i)(2) = hfQuantity.Value
Session("cartTable") = myDatatable
gvCart.DataSource = Session("CartTable")
gvCart.DataBind()
End If
Next
End If
End Sub
I am attaching an image to a listview from code behind, the image depends on a value from the database and there are 5 different images.It sometimes works fine and then will randomly come up with an error, when nothing has changed, the error is:[Code]....
It doesn't seem to make sense to me because ImageUrl IS a member of image. Here is my code:
[Code]....
And code behind: [Code]....
I have an object datasource which is using Business object as a myconnection
The method i have defined under myconnection is
Publicstatic
DataTable getfn(String dtype,
String did,
String dprefix,
String dname)
{
datable table = new datatable(); then declared stored proceedure and defined parameters and assighned values
In the stored proceedure it has a query like select column1,coloumn2,coloumn3 As Call from table where
I need to take data from Call and display it to the gridview through object datasource .
I m new in asp.net. I want to use gridview with a custom business object.
Should i have property in my custom object.is there a way to access object fields.
i try casting the gridview datasource to datatable using the following code but the datatable always nothing.
Dim DT As New DataTable
DT = DirectCast(gv.DataSource, DataTable)
the gridview is bound using dataset at code behind without using sqldatasource.
i m trying to filter the gridview without geting the data from database, is there is another way to do this?
I am trying to return a dataset. I must be doing something wrong. The returned dataset in this sample code indicates there is a datatable, Users, but there are no datarows. What am I doing wrong? This example is only using the rows.count, but of course I really need to use the whole datatable as the datasource for a gridview.
[Code]....
Public Function getmyds() As DataSet
Dim dsUser1 As DataSet = New DataSet()
Dim tbUser1 As DataTable = dsUser1.Tables.Add("Users")
tbUser1.Columns.Add("UserName")
tbUser1.Columns.Add("Days Remaining")
tbUser1.Columns.Add("UserAccountControl")
Dim rwDefaultUser1 As DataRow = tbUser1.NewRow()
rwDefaultUser1("UserName") = "John Smith"
rwDefaultUser1("Days remaining") = 100
rwDefaultUser1("userAccountControl") = "Enabled"
Return dsUser1
End Function
I am making shopping cart application.On Viewing Shopping Cart,when i try to update the quatity of product column it permit me to edit but wn i click update link.the gridview disappears wid all products.send me some code snippet in C# as i want only quantity column to be editable.I am using the following code:in Code behind File
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
[code]...