WebMatrix :: Calculated Field (column) In WebGrid

Dec 15, 2010

Is there a way to have a calculated column (field) in a webGrid in webMatrix?

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I've been practicing with WebMatrix and I've come across this problem. I'd like to use the format property of the WebGrid Column in vbhtml but I can't get it to work. I always get some kind of compilation error. Mostly the compiler says that an expression is needed. There must be a crucial difference between the way it's done in cshtml and the way it's done in vbhtml.

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Feb 3, 2011

right now I playing around with WebMatrix and I followed the tutorial from http://www.asp.net/WebMatrix. Chapter 6 (displaying data in a grid) described how to use a WebGrid helper very clear, but the data in the example is always retrieved from an SQL DB.I want to use the same XML file from chapter 7 (Displaying data in a chart).Using the code:

...
var DataSet = new DataSet();
dataSet.ReadXmlSchema(Server.MapPath("/App_Data/QCFiler.xsd"));

[code]...

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In the example code, you show how to use the rowId in a hyperlink to a detail page like this:

[Code]....

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My webGrid is working perfectly fine. However, I would like the default sort order to be in the opposite direction. If it were SQL, I'd be adding a DESC somewhere. Here's my working line of code:

[Code]....

It correctly sorts on the UWDate column, but I would like it to sort the opposite sort order. Of course, once it is displayed, you can click on the title and it will resort at that time.

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I m facing a problem in WegGrid MVC 3 razor, my code:

[Code]....

How to merge the Edit & Delete links into the same column (Actions)??

i tried to create two (item) in same column, but i get error message.

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ADO.NET :: Calculated Field In Select Statement?

Feb 3, 2011

I thought this would be easy but cannot now find out of to do it. All I want to do is execute an sql query on a table and in addition to the table's columns I want to also select/output a field that is calculated within the query. The table has a column "Owner" and I want to compare this to the UserId to produce a bool column "mine". Effectively doing:Select *, (Owner=@UserId) as mine where.....however, this doesn't work so how can I calculate a column in the select statement?

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DataSource Controls :: Get Calculated Field Into SQL?

Jan 14, 2011

At the top of my form I have some code that calculates a field

[Code]....

In my form I have this code. What changes below do I need to make to have the value of Date in XXXX?

<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:sqlConnection %>"
SelectCommand="SELECT NumPeople, Date1,Time1,Venue FROM People_Count WHERE ((Date1=@ArvDate and Time1 >= '06:00:00.000') or (Date1=XXXX and Time1 <= '06:00:00.000')) and Venue='F & B' ORDER BY Date1 ASC, Time1 ASC">
<SelectParameters>
<asp:QueryStringParameter Name="ArvDate" QueryStringField="ArvDate" />
</SelectParameters>
</asp:SqlDataSource>

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How To Use DisplayName Data Annotations For Column Headers In WebGrid

Mar 9, 2011

I have a Car class that I'm trying to display in an MVC 3 view using the WebGrid helper. Below are the Car and it's metadata class.

Car class:

[MetadataType(typeof(CarMetadata))]
public partial class Car
{
// car implementation
}
Car metadata class:
public class CarMetadata
{
[DisplayName("Car Name")]
[StringLength(100, ErrorMessageResourceType = typeof(ValidationText), ErrorMessageResourceName="CarNameDescriptionLength")]
[Required]
public string CarName { get; set; }
}

View contents:

@model List<Car>
...
var grid = new WebGrid(Model, canPage: true, rowsPerPage: 10);
grid.Pager(WebGridPagerModes.NextPrevious);
@grid.GetHtml(
htmlAttributes: new { id = "grid" },
columns: grid.Columns(
grid.Column("CarName", ?????)
));

GOAL: I'd like to figure out how to use the DisplayName data annotation as the column header text in the WebGrid (?????). Does anyone know how this is accomplished?

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Forms Data Controls :: Calculated Field Sorting Now Working?

Oct 1, 2010

although i had to take the table that has my calculated column and make a view (so i could filter) and then bind the gridview to the view.

My question is as this.

1.) in order to get my calculated field i had to load my data into a table (as suggested)

2.)Add a column to the table and perform calculations

3.)make a dataview from the tables because i could not get the Gridview.datasource= ds.tables("loads").select("Deadhead <= " & sngRadius

4.)the largest of the 3 tables my query is based on contains about 7000 records. The way i have the logic & programming now everytime a new "truck location" is put in the textbox1 and "find loads/button1" is clicked. It calculates the deadhead miles of all 7000 records before filtering. I am filtering based on the deadhead miles.

Does anyone have any recomendation about how to speed this up a bit.

Also in order to get paging to work i had to rebind/filter the data again ... means looping through all 7000 records each time paging is called. This seems terribly ineffecient as i am already forced to use access instead of SQL.

Would i see a performance increase if i installed SQL or mySQL and create linked tables to the ones i use in access. or would access still be the bottleneck?

I don't know if the performance increase would be negligible as i still ultimately be getting the data from Access.

I have posted the entire code for the page below. When i originally started i didn't think there would be to much code so i left it all on one page instead of using code-behind. Would i gain anything by swapping to code-behind now?

[Code]....

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DataSource Controls :: SUM Function On A Calculated Field Does Not Work SQL 2005?

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I have a simple query on a table to calculate the sum of a field (This field is a calculated field from within SQL 2005)SELECT SUM(RunTime) AS TotaL FROM TimeSheets.It errors out with: Error Message: Operand data char type char is invalid for sum operator.If I use the MAX or MIN function, no isssues. The data in this field is numeric.

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Forms Data Controls :: Use Sorting On Calculated Column?

Dec 1, 2010

Split off from http://forums.asp.net/t/1595139.aspx:

I have an additional column called 'KPI %' in my gridview that calculates the percentage of two template fields and thus I cannot use the sortexpression on it. How can I sort the contents of the 'KPI %' column in ASC or DESC format?

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Forms Data Controls :: How To Sort A Gridview By A Calculated Column

May 25, 2010

Is there a way to Sort a Gridview by a Calculated Column? I have a gridview with template fields using lablels and a linq datasource. Those columns sort just fine. I can not get the Calculated column to sort, because there is no sort expression to use...

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Forms Data Controls :: How To Create Calculated Column Using Boundfield In Gridview

Oct 16, 2010

how to create calculated column using boundfield in gridview?

i want to create a new column using the existing records?

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Forms Data Controls :: How To Create Calculated Column With Gridview Boundfield

Oct 17, 2010

how to create calculated column with gridview boundfield?

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Forms Data Controls :: Combine Two Boundfields Into One Calculated Column To Display In Gridview?

Nov 10, 2010

i am trying to combine two boundfields into one calculated column to display in Gridview like:

[code]....

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Aug 20, 2010

Scenario: If you create a table with a column of type nvarchar, populate it with some content and try to modify it using the WebMatrix editor, from nvarchar to ntext, it does not display any error message or warning that this is not possible. It silently saves and reverts the change, back to nvarchar. Wasted some hours on this issue as I thought my column was ntext, but in fact was still nvarchar.

Expected behavior: It should change to ntext, or if SQL CE doesn't support that, it should notify the user that no change was applied.

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SQL Reporting :: How To Sort Column Field And Add TOTAL Column In VS 2008

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I am in VS2008 and in ReporViewer's Design page.

I have "Fruits" as column fields and Months as row fields and Sales as data field.

I have these columns:-

Apple, Orange, Pear.

However, I want it be displayed as

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Any work around ?

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Forms Data Controls :: Gridview Column Change / Replace A Column Data Field Value to 'Not Applicable'?

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WebMatrix :: Force Webmatrix To Create MySQL Database Install Scripts On Local Box?

Nov 9, 2010

I've found a Webmatrix help article that says MS Webmatrix "publishes the (SQL Server or MySQL) database by creating scripts that run in a database that has been created for you by your hosting provider." That is wonderful, except I can't get it to work when I'm trying to publish a MySQL database (backing wordpress) through FTP (my hosting provider does not support 'web deploy'). Again, no problem, since it is already documented that " FTP protocols cannot be used to publish MySQL database. " But this does not excuse Webmatrix from generating MySQL database install scripts for me. During the publishing step, no database install script is generated - at least that I can tell - and there is no manual option to create a database export / backup / install script.

In short, as Webmatrix goes, I'm dead in the water trying to get my database uploaded to my hosting provider. Does anyone know the trick to force Webmatrix to create the MySQL database install scripts on my local box? Once created, I can take-over the upload and install process.

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WebMatrix :: Include Microsoft.Data.Entity.CTP.dll Reference To WebMatrix Website?

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I'm wondering if it is possible to include Microsoft.Data.Entity.CTP.dll reference to WebMatrix site and if the Compact edition of the database would support it? I'd kinda love use something like

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