dataview

问题 I've specified HTML toolips in the options, but it still renders the HTML text in the tooltip instead of the result of the HTML. How can I fix this so that it renders the HTML result? I create a data view and set the columns like so: projectView.setColumns([0,1,3,{ type:'string', role:'tooltip', calc:function(dt,row){ var date = dt.getFormattedValue(row,0); var totalErrors = dt.getFormattedValue(row,3); var percent = Math.round((dt.getValue(row,3)/dt.getValue(row,1))*100); return '<div><b>'+

问题 I have a DataGridView bound to a DataView . The grid can be sorted by the user on any column. I add a row to the grid by calling NewRow on the DataView 's underlying DataTable , then adding it to the DataTable 's Rows collection. How can I select the newly-added row in the grid? I tried doing it by creating a BindingManagerBase object bound to the BindingContext of the DataView , then setting BindingManagerBase.Position = BindingManagerBase.Count . This works if the grid is not sorted, since

问题 How do filter a empty String in DataTable? I need to filter a column (say Customer Name where the name is string.Empty) I tried this but i cant get into right way.. I need to filter the DataView through DataView.RowFilter .. so how to give filter string for string.Empty .. Any idea on this? 回答1: To filter a dataTable- dt.Select("customer_name = ''"); To Filter datatview- dv.RowFilter = "customer_name = ''"; 回答2: Use Select method: DataRow[] foundRows = dt.Select("MyColumn = ''"); 回答3: You can

问题 I'm trying to narrow down the rows that are in my DataView based on a relation with another table, and the RowFilter I'm using is as follows; dv = new DataView(myDS.myTable, "id IN (SELECT DISTINCT parentID FROM myOtherTable)", "name asc", DataViewRowState.CurrentRows); "myTable" and "myOther" table are related via myTable.ID and myOtherTable.parentID, and so the idea is that the DataView should only contain rows from "myTable" which have corresponding child rows in "myOtherTable".

问题 Is there a elegant way, to bind predefined dataGridView columns with results from a SQL statement? Example: dataGridView1.Columns.Add("EID", "ID"); dataGridView1.Columns.Add("FName", "FirstName"); Some SQL like SELECT t.FirstName AS FName, t.EmpID AS EID FROM table t ... and then I call dataGridView1.DataSource = someDataSet.Tables[0].DefaultView; The last call add columns to my datagrid but I just want to bind it by column name not to add new columns. The example will give a result like this

问题 I have data table showing statistics of different cities for different periods. It has following columns names Period | city1,state | city2,state | city3,state Jan 15 25 20 Feb 5 26 29 Mar 35 27 21 I have applied some logic and it gives me column name to sort the respective column name and bind the data again with grid on front End. Now problems comes when I tried the following code for sorting griData.DefaultView.Sort = string.Format("{0} {1}", orderByField, sortDirection) Because of the

问题 In C# & .NET, can one create a DataView that includes only a proper subset of the DataColumn s of a given DataTable ? In terms of relational algebra, one assigns a RowFilter in order to perform a "selection" operation (σ). How would one perform a "projection" operation (π)? 回答1: You can't do that, but you can create a copy of the table with only the columns you want : DataView view = new DataView(table); DataTable table2 = view.ToTable("FirstColumn", "SecondColumn", "ThirdColumn"); Optionally

问题 I have an ExtJS DataView with following template: <ul> <tpl for="."> <li class="report-field" id="{listId}"> {[this.getReorderLinks(values, xindex, xcount)]} <span class="field-title small" data-qtip="{displayName}">{displayName}</span> <i class="field-remove" title="' + deleteLabel + '"></i> </li> </tpl> </ul> Which makes each list of items look like this: Where user can click on different icons and perform related action, moving up/down in order and remove. Note that these items are added

问题 I know how to filter data based on the user's input from a single textbox: FilterDataView.RowFilter = txtFilter.Text; But how would you go about filtering data based on multiple user input from multiple fields. Basically filter would act as a "search" functionality. 回答1: You can use something like light t-sql when defining RowFilter. One idea is: FilterDataView.RowFilter = "name like '%habjan%' and city like '%new york%'" Here you can find a good article about RowFilter syntax: DataView

问题 I have a DataSet with two tables connected by a reference (Loop_id) Table1 Column1 Column2 Loop_id 1 ItemCode_AAA 6 2 ItemCode_BBB 8 Table2 Column1 Loop_id 2014-Sep-09 6 2014-Nov-09 8 How do I retrieve all the columns, except loop_id from both tables to single table. The resulting table should appear like T1_Column1 T1_Column2 T2_Column1 1 ItemCode_AAA 2014-Sep-09 2 ItemCode_BBB 2014-Nov-09 I am using Net Framework 4.5 回答1: Use Linq to DataSets: To enumerate the table, call AsEnumerable .