i am developing a simple form in vb.net on load event i am just filling a datatable from an excell sheet and what to do filtering on it e.g
Dim MyCommand As System.Data.OleDb.OleDbDataAdapter
I have the following code which doesn't seem to work. In the Page_Load function I populate the DataSet and display the results in a grid view.
newsCommand = new SqlCommand("SQL code here", dbConnection);
newsDataSet = new DataSet();
newsDataAdapter = new SqlDataAdapter(newsCommand);
newsDataAdapter.SelectCommand = newsCommand;
newsDataAdapter.Fill(newsDataSet, "Bulletins");
[Code]....
Yet the gridview shows the data it orignally loaded, and not the filtered data. The only thing I can think of is that I'm not using the DataTable in the Page_Load function.
I am in need of filtering the datatable only with Month and Year .
I am able to perform this in SQL using
Year(date) =2015 and Month(date)= 5
How to perform this using Row Filter ...
I'm using the RowFilter within the gridview to filter out the grid. It works pretty good however, if a user enters in more than one value and hits search it seems to work like a "OR" instead of a "AND". Or it will display all values satisfying both rowfilters.
[Code]....
The code is pretty simple you have a group of textboxes and dropdown boxes in the front. When a user enters in the specifics and hits search it falls through each if statement until one is staisfies and sets the gridview....
I was wondering if it is possible to assign 2 variables to DataView.RowFilter. if it is, how do I code it.
I have tried this:
[Code]....
but i got this error
Missing operand before 'and' operator error
I have a method that I created to use the row filter on a dataview. It works fine with a single filter but when I add the AND statement to the end it throughs and execption.
[Code]....
Syntax error: Missing operand before 'And' operator.I spent all day Friday trying to debug this but got nowhere?
In My Project We Filter Dataview Which Contail Integer and string value
sort data likes this
dvv.RowFilter = filterfor + " Like " + SearchExpression;
but when integer value is encounter Error occurred
Cannot perform 'like' operation on system.int64 and system.string
This is the code form my master page:
<asp:Menu runat="server" id="siteMap" CssClass="siteMapCss" DataSourceID="SiteMapDataSource1" Orientation="Horizontal" >
<StaticMenuItemStyle CssClass="StaticMenuItemStyle" />
<StaticHoverStyle CssClass="StaticHoverStyle " />
<StaticSelectedStyle CssClass="StaticSelectedStyle" />
<DynamicMenuItemStyle CssClass="DynamicMenuItemStyle" />
<DynamicHoverStyle CssClass="DynamicStaticHoverStyle" />
</asp:Menu>
This is the Css:
.siteMapCss
{
margin:auto;
margin-top:15px;
}
.StaticMenuItemStyle
{
margin-left:10px;
color:Black;
}
.StaticSelectedStyle
{
color:Gray;
}
It takes the static styles but not the styles for .siteMapCss. i have checked in IE and i can find reference to .siteMapCss. but in chome its not there. IE:................
Gridview Sorting is not Working Since Datatable is Empty
Code: Dim dt As DataTable = TryCast(GRDV.DataSource, DataTable)
above code is returning Empty Gridview ..
code is below
Protected Sub GRDV_Sorting(sender As Object, e As System.Web.UI.WebControls.GridViewSortEventArgs) Handles StudentAssignmentgridview.Sorting
'If showImage = False Then
' showImage = True
'End If
[Code] ......
How can i filter distinct using for RowFilter?
DataView dataView = employeeDataSet.Tables[0].DefaultView;
dataView.RowFilter = "EmployeeName like '" + searchText + "%'";
GridView_Search.DataSource = dataView;
GridView_Search.DataBind();
am i missing something here, only the 2nd datarow ever gets added to table
[Code]....
Dim dt as datatable = test.select()
dt.DefaultView.Sort = "col1 ASC"
for each dr in dt.rows
response.write(dr.item("col1"))
next
I had found out the sorting command is "dt.DefaultView.Sort", but why is it not working. Can someone shed a light.
I have copied this shopping cart from the net and incorporated it into my SearchResult.aspx. I understand the code and it seems simple enough but for some reason I am getting an error when trying to run it. Can someone tell me what is wrong below? The generated error stop at the following point: For Each objDR In objDT.Rows. I was thinking that object was not creative during the page load. So I added an
If IsDBNull(objDT) Then
makeCart()
objDT = Session("Cart")
End If
to check if that object exist or not then try to create it. But that didn't work either. :(
This is the error message:
Object reference not set to an instance of an object.
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.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
[Code]....
This is the code to the page. It take the data from a select button on a gridview1. That doesn't seem to be the problem so I didn't added onto here for you guys to see.
[Code]....
dataTable with dataReader not working
[Code]....
I populate a DataTable, then sort the DefaultView of that DataTable. When I set the DataTable as the source for my report, the sort doesn't work. here is the code (GetData returns a valid DataTable):
Dim dt As DataTable = a.GetData(Parm1, Parm2, Parm3)
If rbtSortByField1.Checked Then
dt.DefaultView.Sort = "Field1 ASC"
ElseIf rbtSortByField2.Checked Then
dt.DefaultView.Sort = "Field2 ASC"
ElseIf rbtSortByField3.Checked Then
dt.DefaultView.Sort = "Field3 ASC"
End If
rpt.SetDataSource(dt.DefaultView.Table)
'This also doesn't work
'rpt.SetDataSource(dt)
I got this error message when I use rowfilter
Line: 938 Error: Sys.WebForms.PageRequestManagerServerErrorException: Cannot perform '=' operation on System.Int32 and System.String.
My code is like this
[Code]....
When I check only string, it's okay
But I have to check string and int because some columns are only Integer such as LLMS_Id, Risk, RsidualRisk
'DataTable' is an ambiguous reference between 'System.Data.DataTable' and 'Microsoft.Office.Interop.Word.DataTable'
View 3 RepliesIf I am passed a datatable and I cant change the column structure..is there anyway to set an existing column to a Primary key so I can easily Find() the row I am looking for?
View 1 RepliesI am filtering dataview using my Date Column but the result is not proper because the Field value also stores time, so I want to convert this Date Field to only Date during Filter. How can I achieve this? Here is my code. And the actual value I am getting in the Dataset Field "CreationDate" is a DateTime field which is like
2010-01-21 14:35:25.203
2010-01-22 12:55:18.033
2010-01-26 12:10:06.990
But I only want to neglet time value and want to compare Date only.
[Code]....
I was reading: [URL]
But I have give a compilation error:
CS0246: The type or namespace name 'DataTable' could not be found (are you missing a using directive or an assembly reference?
i have the dataset with one table.Table contains three column like 'Name','Location','Pin'.I would like to move the data from another table based on schema.
View 2 Repliesim trying to copying specific record from one datatable to another datatable i used below code
public System.Data.DataTable selectspecificdatarow(System.Data.DataTable dtg, int count, int startindex)
{
System.Data.DataTable dtn = dtg.Clone();
for (int i =startindex; i < count; i++)
[Code]....
its taking too long time in cloneing is there any better way to do this task which is Time effecent
how to join two datatable datas into one datatable to show in one gridview
i.e in 1 datatable i have username and pwd and in another datatable i have that user details. how to show all these in one datatable to get those values display in gridview(asp.net)
Dim dt As New DataTable Dim da As New SqlDataAdapter(s, c)
c.Open()
if Not IsNothing(da) Then
da.Fill(dt)
[code]...
When I call da.fill I am inserting all records from my query. I was then hoping to filter them to display only those where the GroupingID is equal to 0. When I run the above code. I am presented with all the data, the filter did not work. Please can you tell me how to get this working correctly.
how to copy data from datatable to table in dataset i ry this but its readonly property
ds.datatable1=newdt.copy