MVC :: Can't Get ModelMetadata When There Is Not Data
Mar 7, 2011
I build a gridview View with a generic model type, because the actual model can be anything.
My model is of type: IModelContainer<IModel>
And the definition of that interface is:
[Code]....
In my grid.cshtml i need to get all the propertynames to use as columnheader, but i do not know them beforehand.
I use the following code :
[Code]....
This works perfectly when there is at least 1 row in the Items list, but how do i get propertynames, when there is no data?
I can get the typeof the actual class implementing the IModel interface via a property on my IModelContainer interface if needed, but i don't know how to go from there.
View 6 Replies
Similar Messages:
Jun 24, 2010
How do I do 'ModelMetadata.FromLambdaExpression(x => x.Books[0], ViewData)' with FromStringExpression?
I tried 'ModelMetadata.FromStringExpression("Books[0]", ViewData)' but it seems it doesn't understand index notation.
View 7 Replies
Feb 3, 2011
[Code]....
[Code]....
How can i get full name of the property ?
View 7 Replies
Nov 29, 2010
Is it possible to change Properties of ViewData.ModelMetadata in Controller?. For example, can I do the following to change the display information of the LogOnModel:
[Code]....
When I do that there is no errors but DisplayName is not change. I'm trying to localize strings to different languages and also to make some attributes of the model different depending on users roles.
View 7 Replies
Jan 15, 2011
After upgrading to MVC 3 RTM I get an exception where it previously worked.
Here is the scenario. I have several objects that use the same underlying interfaces IActivity and IOwned.
IActivity implements IOwned (another interface)
[code]....
View 3 Replies
Aug 4, 2010
i have dataset with two data tables inside
dt1
dt2
i want to bind data from both data table t gridview
for this how can i make join between two data tables inside dataset and retreive data
View 3 Replies
Jan 11, 2010
How to display empty GridView to insert new record if no data retreived for some record on the result from data table?Actually i am trying to give a user an option to add recrod from Gridview. On result of some query it is perfectly displaying data and a footer row with the insertion textbox but when there is no data in the gridview it is not displaying. It should display with footer having insert textbox.
View 5 Replies
Oct 10, 2010
I 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.
[code]....
View 3 Replies
Nov 14, 2010
I have a listview control bound to an SqlDataSource. As part of the formatting I want to add a title to the data returned from my database. For instance if the data base returns a phone number I want to add 'Tel.' first. However I do not want to diplay this
title if the datafield is empty. Here is what I have done so far.
<ItemTemplate>
<asp:Label ID="BusinessLabel" runat="server" Text='<%# "Tel. "+Eval("Business") %>' CssClass="TeleStyle" />
Or This:Tel.
<asp:Label ID="BusinessLabel" runat="server" Text='<%# Eval("Business") %>' CssClass="TeleStyle" />
</ItemTemplate>
Business is a phone number. If the data field contains a number I get: Tel. 1234 123456. If the field is empty I get Tel. If Business is null I want nothing dsplayed, how do I do this?
View 3 Replies
Feb 1, 2011
Using a class component, an Object data source and a formview I am successfully pulliing data from a SQL database. In some cases the rows contain one or more Null values and I would like them to be ignored completely. My simple code follows:-
<%# Eval("add_1") & ","%>
<%# Eval("Add_2") & ","%>
<%# Eval("Add_3") & ","%>
OUTPUT:-
Rose Cottage, 123 New Road, Margate,
View 2 Replies
Oct 28, 2010
I developed a web site more then a year ago with .net2.0/c#/mssql 2005. it works fine but i was asked to replace mssql with mysql.
I wrote a class to complete data access works (unfortunately, I didnt use nhibernate or other data access tools :((
I edited the class to use System.Data.Odbc objects rather than System.Data.SqlClient.
It works fine in selecting data but not manipulating data. when i try to insert new data it adds null data for all fields in the table.
in debug mode, i noticed that it might be caused by OdbcParameter but not sure.
View 4 Replies
Jul 31, 2013
My griedview code :-
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" RowStyle-BackColor="Black" Font-Names = "Arial" Font-Size = "10pt"
HeaderStyle-BackColor="Black" HeaderStyle-ForeColor="Black" ForeColor="Black" AllowPaging ="true"
OnPageIndexChanging = "OnPaging" PageSize = "5">
[Code] ....
Error is:- The data source does not support server-side data paging.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception
Details: System.NotSupportedException: The data source does not support server-side data paging.
Source Error:
Line 34: con.Open();
Line 35: GridView1.DataSource = cmd.ExecuteReader();
Line 36: GridView1.DataBind(); Line 37: con.Close();
Line 38: }
View 1 Replies
Feb 25, 2011
i have 103 column in database 1 column is id, 1 is user ,1 datetime, 100 button on webpage 1 textbox to input value , button1 clicked then value in textbox will insert into database with user:=user.identity.nam datetime=datetime.now colum4 will get value from textbox......button2 for colum2 and buton100 for column100, if i use dataset i need 100 datataset, some other way to solve it ??
View 2 Replies
Nov 18, 2010
I would like to add a column in my datagridview that takes the value from the database and asigns it to the text of a linkbutton or make it a hyperlink. i know how to handle getting the value from the row but dont
know how to make a value a link, or set the text to a link button
View 3 Replies
May 7, 2015
I am referring this article :
[URL]
now when i type something in header Search cell , it shows the data of first page index only , it won't show me data from 2nd page index .. here's my code :
protected void PhasesTempGrid_OnDataBound(object sender, EventArgs e){
GridViewRow row = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);
for (int i = 0; i < PhasesTempGrid.Columns.Count - 1; i++) {
TableHeaderCell cell = new TableHeaderCell();
TextBox txtSearch = new TextBox();
[Code] .....
My gridview is in update panel therefore i did this in .js script :
var prm = Sys.WebForms.PageRequestManager.getInstance();
prm.add_endRequest(function () {
$(document).ready(function () {
$('.search_textbox').each(function (i) {
[Code] .....
Here's my code structure for gridview :
<asp:UpdatePanel ID="ConstructionActPhaseUpdatePanel" UpdateMode="Conditional" runat="server">
<ContentTemplate>
<asp:gridview ID="PhasesTempGrid" ClientIDMode="Static" OnDataBound="PhasesTempGrid_OnDataBound" allowpaging="True" OnPageIndexChanging="PhasesTempGrid_OnPageIndexChanging"
[code]...
and the way i bind the data to gridview is from textboxes ....
[URL].....
View 1 Replies
Oct 18, 2010
in one on my page i am using to add the data from popup window to grid view without using the backend means databasethis is my popup window code
[Code]....
[Code]....
View 2 Replies
Jul 12, 2010
I would like to dropdown box to show only starting from second row of the table. How to use data reader to do it?
View 9 Replies
Jan 12, 2010
.I have a search page where I would search for an item and it would dispaly the results in a gridview...
I have allowed paging and set page size to 10..now I can see the 10 results in the first page and also see the page numbers at the bottom of gridview. But now when i click on the page 2, the method gridview_pageindexchanging is triggered but the result set is not dispalyed. My code is as below..
[code]....
i understand that the data is not binding in the GridView1_PageIndexChanging method..I do not know how can I make data bind..
View 3 Replies
Jun 6, 2010
I have a many to many table in my database called PeopleLanguage
PeopleId, pk and Languags pk each go to the own table People and Language
I know make a method call with my objectdatasource GetPeopleByLanguageId
This returns the languages that the selected person speaks and has a select
query also to lanaguageTable to get LanguageName.
I now print out the results in a datalist that is binding to LanguageName.
What i want to do is show the languages in a horizontal format with a comma after each one.
At the moment if there are 3 languages it shows each one on a seperate line / if I make it horizontal
layout I still dont get a comma. Perhaps I can use a repeater?
View 2 Replies
Nov 3, 2010
I am trying to debug one of the project in which i need to show the data for one of the particular cell in two lines.
This Repeator control Exists in a user control and aspx is calling this User control for displaying the data.
Here is how my code looks:
[Code]....
View 2 Replies
Apr 7, 2010
I have loaded up a gridview object with data. I have turned on Edit on the grid. It lets me edit the data, but I also want to put some code to check for correct data in each field. I tried to assign a requiredfieldvalitor, comparevaliditor but they don't work. Is there an event I can capture to fire up some code before the grid sves my data?
View 3 Replies
Mar 30, 2011
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?
[Code]....
View 6 Replies
Nov 23, 2010
I'm trying to build a chart in my application which will act as a client for an ASP.NET 3.5 web service that I created. The error I get is as follows:
Series data points do not support values of type System.Data.DataViewManagerListItemTypeDescriptor only values of these types can be used: Double, Decimal, Single, int, long, uint, ulong, String, DateTime, short, ushort.
I've tried various ways to resolve this but can't. This error points at the
chtStats.DataBind() line in the code below:
[Code]....
[Code]....
[Code]....
[Code]....
[Code]....
[Code]....
[Code]....
[Code]....
[Code]....
[Code]....
[Code]....
View 5 Replies
Jun 1, 2010
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?
View 1 Replies
Jan 4, 2010
I am displaying selectable rows in a gridview. The selected row uses a stored procedure to display all the fields in a formview when the Select button is clicked.
Only a small subset of the fields in the selected row are editable. When I click the Edit button only the EditItemTemplate fields show up, the read-only fields from the ItemTemplate disappear. I want the read-only rows to remain visible with the editable rows.
If I include the read-only fields in the EditItemTemplate, I get an error when I click Update on the FormView. The error states that there are too many parameters being passed to the stored procedure to update fields. How can I continue to show the read-only fields with the editable fields on the FormView and avoid getting the input parameter error on the stored procedure for the Update command?
View 1 Replies