DataSource Controls :: How To Get Datarowview Property
Apr 16, 2010
I'm trying to figure out how to find whether a column exists in a dataset, and if not, remove certain controls on the page (otherwise it will error out with: DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'my column')
So...
I have a gridview that has xml data loaded dynamically by drop down list selections.
The xml elements vary depending on the file.
One XML file may look like this:
[Code]....
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Similar Messages:
Mar 17, 2010
I am getting the following error :
DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'p2_area_name'.
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.Web.HttpException: DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'p2_area_name'.
Also, I need tp populate data from database in the Area dropdown but not able to do so..
[code]....
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Apr 2, 2010
DataBinding: 'System.Data.DataRowView' does not contain a property with the name '@CACODE'.
Tried some ways.. The code:
[Code]....
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Sep 3, 2010
I keep getting this error>> Why?
<asp:TemplateField HeaderText="RevID" InsertVisible="False"
SortExpression="RevID" Visible="False">
<ItemTemplate>
<asp:Label ID="lblRevID" runat="server" Text='<%# Bind("RevID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
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Feb 17, 2011
On my .aspx code I have
<asp:ListBox ID="LBcategories" runat="server"
DataSourceID="SQLCategories">
</asp:ListBox>
When I was creating a datasource for the List box - it showed the correct data,but when I tested it on the Web - I see a listbox with 3 lines of value:"System.Data.DataRowView". After manually deleting a row from the database - I see only 2 lines. After deleting all rows from the table - the listbox is empty.
So why I don't see the table values, but the string "System.Data.DataRowView"?
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Apr 3, 2010
I wondered what the difference between
'dbo.Property' and 'Property'
would be in an sql query
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Mar 15, 2010
What is the difference between dataview and datarowview?
What is the use of datarowview?
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May 3, 2010
Traditionally with an Object Data Source, the wired up class will have its public properties available for binding (i.e. Gridview columns, etc.) which works well. But what if one of my wired up business objects has a property that is an object itself; can I drill down to a property on that object property and still use it?
So in additiona to the traditional:MyBusniessObject.OrderID...I want to use:MyBusniessObject.Customer.NameID
Your 1st response might be to just wire up the 'Customer' class, but I need properties both on 'MyBusinessObject'and 'Customer'. I do not think this can be done, as the ODS will not display properties on an object instance property. I have tried manually typing in the drilled down value as well, but that wasn't a success either.
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Oct 27, 2010
I am storing a custom "Organisation" object as a session variable. One of the properties of the Organisation object is "OrganisationID" (integer). I have a DataSource that requires a parameter value to run, and I want to use a SessionParameter to populate this. In a previous version, I stored the OrganisationID directly as a session variable. In that case, I could easily access it like this:
[Code]....
However, how do I now access the OrganisationID property of an "Organisation" type session variable (called "Organisation")? I have tried this, which does not seem to work: <asp:SessionParameter Name="OrganisationID" SessionField="Organisation.OrganisationID" Type="Int32" />
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Oct 25, 2010
System.InvalidCastException was unhandled by user code
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May 26, 2010
i am trying to call a SP from SQL Server in asp.net app, but it keep crashing every time it hit
'cmd.Connection.Open();' ,,, it give me this message
"The ConnectionString property has not been initialized "
[Code]....
[Code]....
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Jul 20, 2010
I am trying to get an asp:SessionParameter of a SelectParameters, to use a property of an object in session
instead of having a string in the session like Session["CustomerID"]
Something like Session["Customer"] where the property is ((Customer) Session["Customer"]).CustomerID)
My code:
<asp:sqldatasource id="SqlDataSource1" runat="server" connectionstring="<%$ ConnectionStrings:DBConnectionString %>" xmlns:asp="#unknown"> SelectCommand="SELECT * FROM getStoreCustomers (@customerID,@week,@day)"
ProviderName="System.Data.SqlClient">
<selectparameters>
<asp:sessionparameter name="customerID" sessionfield="Customer" /> ?????? (what is the syntax to pass the property here?)
<asp:controlparameter controlid="ddWeek" defaultvalue="-1" name="week" propertyname="SelectedValue" /> <asp:controlparameter controlid="ddDay" defaultvalue="-1" name="day" propertyname="SelectedValue" /> </selectparameters>
The class I use is like any other class (but serializable)
[Serializable]
public class Customer
{
public int CustomerID
{
get;
set;
}
}
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May 26, 2010
I m working in Asp.net 2.0 with C#.... I have a custom control and i have to use 'Datasource' property which is exactly like a repeater having.
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Mar 6, 2010
Sql Server 2008 introduced a number of new data types. One of those types is Date. I have been trying to find the C# equivalent of the Date data type. Before I start using the Date data type I have a few questions. Am I correct that I still need to use the DateTime Data type in C# when mapping data to and from Sql Server? I am using Linq to Sql. Are there any conversion issues that I need to be aware of when mapping the Sql Server Date into and out of a C# DateTime property?
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May 11, 2010
I have a a page where i am geting data in Dataset, Which I need to fill the data in text boxes.. For that i have created a property class. How can we connect to dataset to class.
DataSet ds = serviceCommonClient.GetDataSet(Session["ConnectionString"].ToString(), "sp_LoadBrokers", spParameter);
txtBrokerName.Text = ds.Tables[0].Rows[0]["tbr_Broker_Name"].ToString();
txtAddress.Text = ds.Tables[0].Rows[0]["tbr_BrokerAddress"].ToString();
txtZipCode.Text = ds.Tables[0].Rows[0]["tbr_Broker_Zip_Code"].ToString();
txtCity.Text = ds.Tables[0].Rows[0]["tbr_Broker_City"].ToString();
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Jan 11, 2011
Where do I validate my date values prior to passing them as insert programs ?
I am trying to pass some Null dates.
In my property ?
[Code]....
[Code]....
[Code]....
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Jan 8, 2010
I am creating a WebUserControl in ASP.Net 2.0 C#. I want to add a DataSource property that will have that useful DropDownList of data sources when I add the control at design time. Here's a fragment of the property in the WebUsercontrol:
[Code]....
Is there an attribute for that?
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Oct 30, 2010
I have a code block that contains around 320 lines of code. Everything runs fine when i debug it until i reach the section that updates a sql datasource. I am using:
sqlDScc.UpdateParameters("friendlyName").DefaultValue = friendlyName
I have 38 lines of update parameters before i call the sqldscc.Update When i put a break point before the update parameters all the values are correct at the break point at the end all the values are "Property Valuation Failed"?. I'm not using any response.end, response.redirect or server.transfer
[Code]....
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Feb 23, 2010
I have a GridView that displays records based on a SQLDataSource, which gets it's data from a very simple stored procedure. I want to use stored procedures to update & delete records in the GridView, which I have done in the past.
Our organization requires that the names of the parameters within our stored procedure start with "@p" to differentiate between passed parameters and internal variables. This is causing me my issue. If I change the stored procedure code to reference the fields without the "p", everything works properly. This is because the SQLDataSource parameters use the default ParameterPrefix of "@" and correctly references the stored procedure parameters. Here is the relevant code:
[Code]....
I found a MS article describing how to override the default ParameterPrefix, but I am unable to implement it. I can add their example code, but how do I "assign" this property to my GridView?
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Feb 12, 2010
I have two tables, both contains same properties. The problem is the address spellings MAY vary between table 1 and table 2 but they are actualy same properties. In my sql statement it list out the property that has exactly the same spellling. How do I match the two tables addresses? I heard about fuzzy algorithm but how do I apply it here. I know it wont be perfect but it will be close (check my sql below) I use sql server 05.
Example
Table 1
- 123 greenwood hwy
- 123 halo street
Table 2
- 123 greenwood highway
- 123 halo street
SELECT table1.address,table2.street_address
FROM table1 INNER JOIN
able2 ON table1.address = table2.street_address
My Output returns only one property that has same exact address spellings
- 123 halo street | 123 halo street
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Jan 19, 2011
-update start
Unable to cast object of type 'namespace.Student' to type 'System.Data.DataRowView'
<%# FixNull(((System.Data.DataRowView)Container.DataItem).Row, "Name")%>
protected string FixNull(DataRow dr, string fieldName)
{
if (dr != null)
{
if (!dr.IsNull(fieldName))
return (dr[fieldName]).ToString();}
return " ";
}
-update end
in the below method expecting an object, so how would i cast it to that type? i always get null no matter what column.
calling from .aspx:
<%# FixNull((mynamespace.Student)(Container.DataItem), "CreatedBy")%>
.CS
protected string FixNull(object dataItem, string fieldName)
{
if (dataItem != null)
{
DataRowView drv = (DataRowView)dataItem;
if (drv != null) //always getting null
{
if (!drv.Row.IsNull(fieldName))
return (drv[fieldName]).ToString();
}
}
return " ";
}
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Feb 22, 2010
Im using two stored procedures to write and update values in a SQL DB. Im using the SQLDatasource update method. When I run the webpage on my development server everything runs fine. When I try and run the web page on my Live server I get the following error :System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding This always takes 30 seconds to fail - and looking at google it seems that this is a connection timeout error.In my web.config file I have updated the connectionstring line to include a timeout setting :
connectionString="Data Source=myserver;Initial Catalog=ReportServer;Integrated Security=True;Connect
Timeout=10000"
But this hasn't helped at all.
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Jun 26, 2010
I am using Visual Studio 2010 for the first time. I program in MS Access for a long time at decide to move to the ASP world. My problem is that I design my first web .aspx default page with a simple data grid. I decided to connect the data via the business object data adapter. I use the Dataset designer to great the dataset. All looks well and works fine on my PC. But when moved to the server I get the Terror "The type specified in the TypeName property of ObjectDataSource not found".
From my reading for the past two days, it seems that something need to be define (a class of some sort) to let ASP know where to find the data adapter. If this is the case, then why did not Visual Studio 2010 did not automatically build the class in the appropriate BIN/ APP_CODE or Global directory and more importantly, why would it work fine on the PC , but not on the server. I am totally blind-sided by Visual Studio 2010 allowing me to design and test on PC but throws me a curl ball with moving to a server. Am I assuming to much from Visual Studio 2010???
What is the solution.. What I am looking for is to know where exactly where and how to write this class. I am so new to ASP, all of my reading just confusing me more and more by reading so many post on this error. I know it is probably a simple class to write somewhere, but why did not Visual Studio 2010 write it accordingly.
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Apr 21, 2010
I've got an odd problem and can't figure out what's causing it. We've got 2 different DataSets in the same project and I'm seeing different generated code from the MSDataSetGenerator. Both projects are .NET Framework 4.
In one DataSet, I can open the .Designer.cs file and there's a line like:
[Code]....
This essentially exposes a Transaction property to any partial class I create so I can do with it what I want (by setting it to something).
In the other DataSet no matter what I try to do, this Transaction property never gets generated. I've right-clicked on both DataSets and chose "Run Custom Tool" to get them to regenerate (I've even tried deleting the .Designer.cs file before doing this) and they both get generated the same.
I tried to make sure all the properties of the DataSets were the same. Both are using .NET Framework 4.0 and VS2010.
The file that does not generate the Transaction was from a .NET 1.0 asp.net web site that has continually been upgraded through different .NET versions. Right now it's at 4.0 but I don't know if that would have anything to do with it.
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Apr 20, 2010
I have an insert that uses an object data source with out the direction property set and it works fine. I noticed the direction property though and wondered if I should use it.Should the direction property for the parameters of an object data source be used with a simple CRUD operations?
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