gridview

GridView – Show headers on empty data source

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ASP.Net 4.0 added the boolean ShowHeaderWhenEmpty property. http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.gridview.showheaderwhenempty.aspx <asp:GridView runat=”server” ID=”GridView1″ ShowHeaderWhenEmpty=”true” AutoGenerateColumns=”false”> <Columns> <asp:BoundField HeaderText=”First Name” DataField=”FirstName” /> <asp:BoundField HeaderText=”Last Name” DataField=”LastName” /> </Columns> </asp:GridView> Note: the headers will not appear unless DataBind() is called with something other than null. GridView1.DataSource = New List(Of String) GridView1.DataBind()

How to hide a column (GridView) but still access its value?

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<head runat=”server”> <title>Accessing GridView Hidden Column value </title> <style type=”text/css”> .hiddencol { display: none; } </style> <asp:BoundField HeaderText=”Email ID” DataField=”EmailId” ItemStyle-CssClass=”hiddencol” HeaderStyle-CssClass=”hiddencol” > </asp:BoundField> ArrayList EmailList = new ArrayList(); foreach (GridViewRow itemrow in gvEmployeeDetails.Rows) { EmailList.Add(itemrow.Cells[YourIndex].Text); }

Best way to make WPF ListView/GridView sort on column-header clicking?

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I wrote a set of attached properties to automatically sort a GridView, you can check it out here. It doesn’t handle the up/down arrow, but it could easily be added. <ListView ItemsSource=”{Binding Persons}” IsSynchronizedWithCurrentItem=”True” util:GridViewSort.AutoSort=”True”> <ListView.View> <GridView> <GridView.Columns> <GridViewColumn Header=”Name” DisplayMemberBinding=”{Binding Name}” util:GridViewSort.PropertyName=”Name”/> <GridViewColumn Header=”First name” DisplayMemberBinding=”{Binding FirstName}” util:GridViewSort.PropertyName=”FirstName”/> <GridViewColumn Header=”Date of birth” DisplayMemberBinding=”{Binding DateOfBirth}” … Read more

How to autosize and right-align GridViewColumn data in WPF?

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To make each of the columns autosize you can set Width=”Auto” on the GridViewColumn. To right-align the text in the ID column you can create a cell template using a TextBlock and set the TextAlignment. Then set the ListViewItem.HorizontalContentAlignment (using a style with a setter on the ListViewItem) to make the cell template fill the … Read more

Create thumbnail image

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You have to use GetThumbnailImage method in the Image class: https://msdn.microsoft.com/en-us/library/8t23aykb%28v=vs.110%29.aspx Here’s a rough example that takes an image file and makes a thumbnail image from it, then saves it back to disk. Image image = Image.FromFile(fileName); Image thumb = image.GetThumbnailImage(120, 120, ()=>false, IntPtr.Zero); thumb.Save(Path.ChangeExtension(fileName, “thumb”)); It is in the System.Drawing namespace (in System.Drawing.dll). Behavior: … Read more

Gridview height gets cut

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After (too much) research, I stumbled on the excellent answer of Neil Traft. Adapting his work for the GridView has been dead easy. ExpandableHeightGridView.java: package com.example; public class ExpandableHeightGridView extends GridView { boolean expanded = false; public ExpandableHeightGridView(Context context) { super(context); } public ExpandableHeightGridView(Context context, AttributeSet attrs) { super(context, attrs); } public ExpandableHeightGridView(Context context, AttributeSet … Read more

How to set Custom height for Widget in GridView in Flutter?

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The key is the childAspectRatio. This value is use to determine the layout in GridView. In order to get the desired aspect you have to set it to the (itemWidth / itemHeight). The solution would be this: class MyHomePage extends StatefulWidget { MyHomePage({Key key, this.title}) : super(key: key); final String title; @override _MyHomePageState createState() => … Read more

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