Asp.net formatting dateTime in gridview

asp.netgridview

I'm binding a gridview dynamically from a table in my database I have called "Sessions". I get the information from a method using a linq query that is something like this:

var s = from sessions in datacontext.Sessions
                    where sessions.test == id
                    orderby sessions.ID ascending
                    select sessions;
gridView.DataSource = qsessions;
gridView.DataBind();

Sessions contains a dateTime field that I want to minimize to just display the date (month/day/year). From what I've read through google searches, the solution is to specify the formatting in the aspx markup of the gridview using something like:

<asp:TextBox ID="txtDate" runat="server" Text='<%# Eval("dateTime", "{0:MM/dd/yyyy}") %>'></asp:TextBox>

It doesn't seem to work and still shows the time after the date. Is there something I'm missing? Help much appreciated!

Best Solution

Try:

<asp:TextBox ID="txtDate" runat="server" Text='<%# Convert.ToDateTime(Eval("dateTime")).ToString("d") %>'></asp:TextBox>

See this helpful site for more formatting options:

http://www.mikesdotnetting.com/Article.aspx?ArticleID=23

Website:

The Web Site project is compiled on the fly. You end up with a lot more DLL files, which can be a pain. It also gives problems when you have pages or controls in one directory that need to reference pages and controls in another directory since the other directory may not be compiled into the code yet. Another problem can be in publishing.

If Visual Studio isn't told to re-use the same names constantly, it will come up with new names for the DLL files generated by pages all the time. That can lead to having several close copies of DLL files containing the same class name, which will generate plenty of errors. The Web Site project was introduced with Visual Studio 2005, but it has turned out not to be popular.

Web Application:

The Web Application Project was created as an add-in and now exists as part of SP 1 for Visual Studio 2005. The main differences are the Web Application Project was designed to work similarly to the Web projects that shipped with Visual Studio 2003. It will compile the application into a single DLL file at build time. To update the project, it must be recompiled and the DLL file published for changes to occur.

Another nice feature of the Web Application project is it's much easier to exclude files from the project view. In the Web Site project, each file that you exclude is renamed with an excluded keyword in the filename. In the Web Application Project, the project just keeps track of which files to include/exclude from the project view without renaming them, making things much tidier.

Reference

The article ASP.NET 2.0 - Web Site vs Web Application project also gives reasons on why to use one and not the other. Here is an excerpt of it:

You need to migrate large Visual Studio .NET 2003 applications to VS 2005? use the Web Application project.

You want to open and edit any directory as a Web project without creating a project file? use Web Site project.

You need to add pre-build and post-build steps during compilation? use Web Application project.

You need to build a Web application using multiple Web projects? use the Web Application project.

You want to generate one assembly for each page? use the Web Site project.

You prefer dynamic compilation and working on pages without building entire site on each page view? use Web Site project.

You prefer single-page code model to code-behind model? use Web Site project.

Web Application Projects versus Web Site Projects (MSDN) explains the differences between the web site and web application projects. Also, it discusses the configuration to be made in Visual Studio.

C# – How to implement conditional formatting in a GridView

Not sure if you can use a BoundField, but if you change it to a TemplateField you could use a formatting function like in this link.

ie something like

<%# FormatDataValue(DataBinder.Eval(Container.DataItem,"ItemValue")) %>

Then in your codebehind, you can add a Protected Function

Protected Function FormatDataValue(val as object) As String
    'custom enter code hereformatting goes here
End Function

Or you could do something in the OnRowCreated event of the gridview, like in this link

<asp:GridView ID="ctlGridView" runat="server" OnRowCreated="OnRowCreated" />

this function is conditional formatting based on whether or not the datavalue is null/is a double

protected void OnRowCreated(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        DataRowView drv = e.Row.DataItem as DataRowView;
        Object ob = drv["ItemValue"];


        if (!Convert.IsDBNull(ob) )
        {
            double dVal = 0f;
             if (Double.TryParse(ob.ToString(), out dVal))
             {
                 if (dVal > 3f)
                 {
                     TableCell cell = e.Row.Cells[1];
                     cell.CssClass = "heavyrow";
                     cell.BackColor = System.Drawing.Color.Orange;
                 }
             }
        }
    }
}

Best Solution

Related Solutions

.net – ASP.NET Web Site or ASP.NET Web Application

Website:

Web Application:

C# – How to implement conditional formatting in a GridView

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