I'm using the DetailView control to display employee details from a specfic company, but it seems when I try to create the query in the data source wizard I'm unable to select the variable for the WHERE clause, only the web pages control components.
The employees are selected through the company name which is entered at the beginning of the page and in turn is used to select the company id.
I have a gridview and I have an edit template for one control. I have a drop down box in this edit template so that you can select a value from it and then when you hit 'Update' the value from the drop down box is committed to the updated record. Unfortunately when I do hit the update button I get a fault that the "Status" field cannot be null.
Here is the code that picks the value from the drop down value and assigns it to the new values list:
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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?
Is it possible to use dynamic query filters with a gridview using a stored procedure as a data source? What I'm thinking of is a search page where there are multiple controls to enter in a search string and a radio button for the AND/OR query filters between the various controls. If not, what would be the best way to allow a user to select an AND / OR with a group of different query controls?
Here is the page I have created thus far using a view and no AND/OR option. I but I can't get it to work with my SP, also listed below:
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I cant get this right
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Where PKey is a variable that holds the Datakey
I have the following ItemTemplate in Repeater1
[code]....
How do I insert the value of ListID into the query string?
I am using ASP.NET 2.0 and C#. I have a gridview, which has a datanavigateurlformatstring, in which i am passing data in the gridview as querystrings.I have a hiddenvariable in the page. i would like to pass the hidden variable to the gridview in the datanavigateurlformatstring.Currently i have the gridview and hidden variable like this:
[Code]....
How to pass the hiddenfield value in the datanavigateurlformatstring?
First up i would like to apoligize for these questions that are proable realy easy. I have been put on the spot by my boss and have been told to change all my php to asp.net c so it can go in this new cms i have at work. I have just spent the last 18 hours trying to get this to work and im geting a little desperate.
Ok so my current issue is that i dont know how to add html formating to a result string i pull out of my mysql database. I have my result sheet pulling into a gridview, what i want to do is put some information drawn from each row in the gridview out side of the <Tr> tag. Is this possible? But within the Table Tag second issue is it possiple to feed data into a page and then run a mysql query like i was doing in php.
I am using the datanavigateurlformatstring within a datagrid property with the property set something like;
editrecords2.aspx?RID={0}&SID={1}&LID={2}&DIP={3}&IID={4}&TID{5}
Unfortunately, when the new webpage opens, the url contains lots of spaces and I'm struggling to remove all of the spaces. The code actually works but looks a bit messy, see below.
"http://localhost:34354/website1/editrecords2.aspx?rid=2&sid=2& dip=5 & iid=3 &tid=3"
but should look like this
"http://localhost:34354/website1/editrecords2.aspx?rid=2&sid=2&dip=5& iid=3&tid=3"
How do I do this? I want to search my database in listview form with the text from a textbox or an item from a drop down list which is on another page.
View 1 RepliesI have developed the below web page which has an asp.net 3.5 listview control as it's frontend and an sql server db as it's backend.
[URL]
The first row on the web page is the inserting row. What I am hoping to achieve is that when the user enters their appropriate data they click the "Next" button to assign this dataset with it's own identity ID (customer_id) value within my database (this works perfectly), at the same time on the fly I want to use this customer_id as a query string variable to populate a child page (customerTrades.aspx) in order to pin further data to this identity. Currently I am attempting to use the below code within the iteminserted event of my listview control but I receive the error: "object reference not set to the instance of an object"??
protected void lvTrustAccounts_ItemInserted(object sender,
ListViewInsertedEventArgs e)
{
string customerID = e.Values["customer_id"].ToString();
Response.Redirect("http://www.tradeselector.co.uk/customerTrades.aspx?customer_id="
+ customerID + "");
}
Is this because the child page cannot find the customer_id variable being passed through the query string? Because it's not actually created yet? Am I using the wrong listview event? How can I achieve what I am looking for?
I must also mention that I'm using a linqdatasource to insert my data on runtime into my database. However, I am using the listview iteminserting event to insert my frontend dropdownlist selected values, code below:
protected void lvTrustAccounts_ItemInserting(object sender,
ListViewInsertEventArgs e)
{
e.Values["customer_created_date"]
= DateTime.Now;
e.Values["customer_update_date"]
= null;
DropDownList ddl_CountyInsert =
(DropDownList)lvTrustAccounts.InsertItem.FindControl("CountyInsertDDL");
DropDownList ddl_CityInsert =
(DropDownList)lvTrustAccounts.InsertItem.FindControl("CityInsertDDL");
DropDownList ddl_CountryInsert =
(DropDownList)lvTrustAccounts.InsertItem.FindControl("CountryInsertDDL");
e.Values["customer_county_code"]
= ddl_CountyInsert.SelectedValue;
e.Values["customer_city_code"]
= ddl_CityInsert.SelectedValue;
e.Values["customer_country_code"]
= ddl_CountryInsert.SelectedValue;
}
I got the following error message:
There was an error executing the query. Please check the syntax of hte the command and if present, the types and values of the parameters and ensure they are correct. Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.
But when I run the query through Management Studio, I can get the result.
There are no parameters for this query either.
I am new to VB.net programming and working on a school assignment. I have 2 display pages: default.aspx and DisplayTaxReturn.aspx. On default.aspx I have a list view where it uses data source to get the tax payer ID's from the server and I also have a details view where it displays the records associated to the tax payer.
When I click the View button on default.aspx it takes me to DisplayTaxReturn.aspx where it should display the tax payer ID and it's records that were displayed in default.aspx using label text fields.
My question is, how do I pass the values of the selected tax payer ID (datasource1 on default.aspx) to the DisplayTaxReturn.aspx page?
I have a query string with huge params (greater than 2 KB) and i have to pass it to another page in which there is an email component. I have to send the email with a link (URL) that has the query string so that user can click on the link and access the page.
View 4 Repliesi have done the following
void Session_Start(object sender, EventArgs e)
{
// Code that runs when a new session is started [code]...
basically am using them to store user id and status, so that pages can be validated, by there use.i can stop person from accessing home directly wihtout signing is and so on.can session variable be hacked as they are stored in an external data source and are available to the full website?
This 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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got a wired problem (well I find it a wired problem :P)
I have an order page done in asp.net c#, and which a user adds ingredients to a set of list boxes, once the user and finished adding items, they get combined to make a sandwich then added to another list box that shows the sandwiches and their ingredients. I also have a button to allow the user to remove the ighlighted sandwich from the order, this all works fine until the page loads up with a query string that skips the adding of ingredients and just shows the sandwiches on a order, the listbox of sandwiches populates fine but I then get an error when the remove button is clicked which is
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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?
View 2 RepliesI have a GridView or DetailsView and its bound to a CslaDataSource.I noticed that the "Object_Select()" event is fired automatically with every time the page is loaded or refreshed.How I can perfrom mnaual biding between the DetailsView Control and CslaDataSource ?I want to control binding via code using the DetailsView.DataBind() method in certain cases only.
View 4 RepliesI'm creating a page that allows the user to create a new object that will later be stored in the database. The problem is that the design of ASP.NET data controls seems to insist upon only working with pre-existing data that has been stored in a database (or XML, etc...).
I'm basically trying to get the user to compose a list of items and specify a quantity for each item. I could do this by generating table rows but the rows are lost at each postback. The data view controls seem to be designed only to be bound to a data source but until the list is complete, the data can only be in memory.
What control is appropriate for this and how can I achieve this with that control?
I am trying to create FormView that has details aboout author. But some details about his books like pubdate, title resides in some other table. In the source page:
<asp:Label id"AuthorName" Text='<% #Bind("au_fname")%>' runat="server/>
but this field has to be obtained from other table:
<asp:Label id="AuthorTitle" Text='<% #Bind("title")%>' runat="server"/>
the title resides in titleauthor table, can we use two connections(author, titlesauthor) simultaneously.
Am using the following 2 events for child grid.
1. RowDataBound
2. RowEditing
I enable AutoGenerateEditButton = "true", which can show me edit button in the child grid. Also i have tried to use the event rowediting which can return e.NewEditIndex too. for the master i use sqlDatasource design time. for the child grid am confusing how to do the edit/delete/add.
following link good enuf for master grid
[URL]
for child grid datasource if am not mistaken, guess need to assign the datasource during runtime. am not sure how to do this?
Following is the link for my so far trial
[URL]
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I have extended GridView in order to have consistent look & feel, paging and sorting. However, when the page is first time loaded, the select method is getting called twice. It works fine when i move between pages in pagination.
Note, i am using Asp.net 2.0.
i wanted to retrieve things from the data base and perform mathmatical operations on it then post it to the user, so i was told to use the bullited list and bind it to the object dataSource
how to perform such thing??
I have a gridview with daatsource from MembershipUserCollection. When my collection doesn't contain any records the gridview just disappears. I want to display the empty gridview indicating no records exist rather than the grid just become invisible.
How to make gridview always visible ?