How to create a Search button on a DataGrid?
Question
I am using Visual Studio 2008 Shell and SQL Server 2008. Currently I am able to display DataGrid. But now I have a new requirement where I have to enable a text search in one of the columns. How can I implement this? I tried implementing a solution I found online, but I'm still getting errors. Please be gentle; I am a novice VB.Net programmer!
And since this is Shell edition and source data is on a different machine which I do not have direct access to, I am not able to debug at all.
Below is all of my code. Note that currently I cannot even view it as an ASPX page since there are still a couple of errors. Can you either give me a URL or some simple tips for me to follow as I develop this? Thanks!
Here is my code below:
<%@ Page Language="VB" Debug="true" Src="../Global.vb"%>
<%@ Import Namespace="ChartDirector" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.OleDB" %>
<%@ Import Namespace="System.Math" %>
<%@ Import Namespace="system.data.SqlClient" %>
<%@ Import Namespace="System.Web.UI.WebControls" %>
<%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %>
<html>
<SCRIPT LANGUAGE="VB" RUNAT="Server">
Sub Page_Load(ByVal Sender As Object, ByVal E As EventArgs)
If Not IsPostBack Then
Main()
Else
If part_transfer.Value.Trim() <> "" Then
'ShowChart()
Panel1.Visible = False
Panel2.Visible = True
End If
End If
End Sub
Dim DSTableData As New System.Data.DataSet
Sub Main()
'------------------------- Query database and get arrays for the chart and bind query results to datagrid ----------------------------------------
If check1.Checked Then
DSTableData = GlobalFunctions.GlobalF.FillSparePartsTable(1)
Else
DSTableData = GlobalFunctions.GlobalF.FillSparePartsTable(0)
End If
Me.Button1 = New System.Web.UI.Control
Me.TextBox1 = New System.Web.UI.Control
dgTable.DataSource = DSTableData
dgTable.DataBind()
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
For i As Integer = 0 To DSTableData.Tables(0).Rows.Count - 1
If dgTable.Items(i).ToString = TextBox1.Text Then
Me.dgTable.SelectedItem(i)
Me.dgTable.SelectedIndex(i)
Exit Sub
End If
Next
End Sub
Sub ScrollToRow(ByVal row As Integer)
If Not Me.DataBind(row) Is Nothing Then
Me.GridVScrolled(Me, New ScrollEventArgs(ScrollEventType.LargeIncrement, row))
End If
End Sub
Private Sub DataGrid1_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs)
If e.Item.ItemType = ListItemType.AlternatingItem Or e.Item.ItemType = ListItemType.Item Then
Dim thepriority As Integer
If e.Item.Cells(7).Text = " " Then
thepriority = 3
Else
thepriority = e.Item.Cells(7).Text
End If
Dim thecolor As String
If thepriority = 1 Then
thecolor = "Red"
Else
If thepriority = 2 Then
thecolor = "Yellow"
Else
thecolor = "Green"
End If
End If
Dim i As Int16
If thepriority = 1 Then
For i = 0 To 6
e.Item.Cells(i).BackColor = System.Drawing.Color.Red
Next
Else
If thepriority = 2 Then
For i = 0 To 6
e.Item.Cells(i).BackColor = System.Drawing.Color.Yellow
Next
Else
For i = 0 To 6
e.Item.Cells(i).BackColor = Drawing.Color.LightGreen 'System.Drawing.Color.Green
Next
End If
End If
Dim itemType As System.Web.UI.WebControls.ListItemType
Dim thepart As String = e.Item.Cells(0).Text
Dim thepartdesc As String = e.Item.Cells(1).Text
itemType = CType(e.Item.ItemType, System.Web.UI.WebControls.ListItemType)
If (itemType <> System.Web.UI.WebControls.ListItemType.AlternatingItem) Then
e.Item.Attributes.Add("OnMouseOver", "this.style.backgroundColor = '" & thecolor & "';")
e.Item.Attributes.Add("OnMouseOut", "this.style.backgroundColor = 'white';")
e.Item.Attributes.Add("OnClick", "GetChart('" & thepart & "','" & thepartdesc & "','" & thecolor & "',this);")
Else
e.Item.Attributes.Add("OnMouseOver", "this.style.backgroundColor = '" & thecolor & "';")
e.Item.Attributes.Add("OnMouseOut", "this.style.backgroundColor = '#eeeeee';")
e.Item.Attributes.Add("OnClick", "GetChart('" & thepart & "','" & thepartdesc & "','" & thecolor & "',this);")
End If
End If
End Sub
Private Sub btnExport_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExport.Click
GlobalFunctions.GlobalF.DataGridToExcel(dgTable, Response)
End Sub
Sub ReRun_Main(ByVal sender As Object, ByVal e As EventArgs)
Main()
End Sub
</SCRIPT>
<script type="text/javascript" language="javascript">
function GetChart(thepart, thepartdesc, thecolor, row)
{
Form1.part_transfer.value = thepart;
Form1.part_desc_transfer.value = thepartdesc;
Form1.submit();
}
</script>
<head>
<title></title>
<style type="text/css">
.DataGridFixedHeader {background-color: white; position:relative; top:expression(this.offsetParent.scrollTop);}
</style>
</head>
<body>
<form runat="Server" method="post" id="Form1">
<div style="font-size:18pt; font-family:verdana; font-weight:bold; color:#336699">
Parts Watch List
</div>
<hr style="font-weight: bold; font-size: 20pt; color:#000080;" />
<div style="height: 380px; text-align: center; position: static;">
<input id="part_transfer" type="hidden" runat="server"/>
<input id="part_desc_transfer" type="hidden" runat="server"/>
<asp:Panel id="Panel1" runat="server" HorizontalAlign = "Center">
<span style="font-weight: bold; text-align: left; font-size: 15pt;">
Calculation:</span><br />
Reliability Rate = 1 - ( number of failed parts in the last 6 months / Part Multiplier * Average instrument Census in the last 6 months),<br />
Where
<br />
Number of failed parts - Summation of failures of a part for a 6 month period<br />
Part Multiplier - Number that represents how many times a part is used on the intrument<br />
Average instrument census - Average of the instrument census for the same
6 month timeframe as failed parts<br />
<br />
Please choose one of the parts below to view the control charts.</p>
</asp:Panel>
<asp:Panel id="Panel2" runat="server" Visible="false">
<chart:WebChartViewer id="WebChartViewer1" runat="server" HorizontalAlign="Center" />
</asp:Panel>
</div>
<hr style="width: 90%; position: static;" />
<div style="text-align: center; position: static; ">
<asp:Label id="CensusLastUpdate" runat="server"/><br />
<asp:Button id="btnExport" runat="server" Text="Export to Excel"></asp:Button>
<asp:CheckBox id="check1" Text="Display Only Parts Below Threshold" TextAlign="Right" AutoPostBack="True" OnCheckedChanged="ReRun_Main" runat="server" />
<asp:TextBox ID="TextBox1" Text="Enter Part Number" runat="server" />
<asp:Button ID="Button1" Text="Search" runat="server" />
</div>
<% Dim scrollPosURL As String = "../includes/ScrollPos.htc" %>
<input id="saveScrollPos" type="hidden" runat="server" name="saveScrollPos"/>
<table border="0" cellspacing="0" align="center" style="">
<tr>
<td>
<div persistID="<%= saveScrollPos.UniqueID %>" scrollPOS="<%= saveScrollPos.value %>" style="OVERFLOW: auto;
HEIGHT: 400px; BEHAVIOR: url(<%= ResolveURL(scrollPosURL)%>);">
<ASP:DATAGRID ID="dgTable" HorizontalAlign="Center" runat="server" AutoGenerateColumns="False" ShowHeader="True" OnItemDataBound="DataGrid1_ItemDataBound">
<AlternatingItemStyle BackColor = "#eeeeee" />
<HEADERSTYLE CssClass="ms-formlabel DataGridFixedHeader" BackColor = "#336699" ForeColor = "#ffffff" Font-Bold = "true" />
<COLUMNS>
<ASP:BOUNDCOLUMN HEADERTEXT="Part No." DATAFIELD="PN" READONLY="true" ItemStyle-Width="130px" ItemStyle-Font-Size="8"/>
<ASP:BOUNDCOLUMN HEADERTEXT="Part Desc" DATAFIELD="PART_DESC" READONLY="true" ItemStyle-Width="150px" ItemStyle-Font-Size="8"/>
<ASP:BOUNDCOLUMN HEADERTEXT="Number of Failed Parts (last 6 months)" DATAFIELD="numFailed" READONLY="true" ItemStyle-Width="200px" ItemStyle-Font-Size="8"/>
<ASP:BOUNDCOLUMN HEADERTEXT="Average Census (last 6 months)" DATAFIELD="AvgCensus" READONLY="true" ItemStyle-Width="215px" ItemStyle-Font-Size="8"/>
<ASP:BOUNDCOLUMN HEADERTEXT= "Part Multiplier" DATAFIELD="PartMultiplier" READONLY="true" ItemStyle-Width="100px" ItemStyle-Font-Size="8"/>
<ASP:BOUNDCOLUMN HEADERTEXT= "Criticality" DATAFIELD="Criticality" READONLY="true" ItemStyle-Width="100px" ItemStyle-Font-Size="8"/>
<ASP:BOUNDCOLUMN HEADERTEXT="Reliabilty Rate" DATAFIELD="ReliabilityRate" READONLY="true" ItemStyle-Width="105px" ItemStyle-Font-Size="8"/>
<ASP:BOUNDCOLUMN HEADERTEXT="Priority" DATAFIELD="PRIORITY" READONLY="true" Visible="False" ItemStyle-Width="0px" ItemStyle-Font-Size="8"/>
</COLUMNS>
</ASP:DATAGRID>
</div>
</td>
</tr>
</table>
</form>
</body>
</html>
1 answers
solution1
0 2011-05-16 17:33:28
You will probably need to create a function overload for GlobalFunctions.GlobalF.FillSparePartsTable(1, SearchString) that will accept the search string as an argument.
Create the datasource with a query like
select * from search table where searchcolumn like @Searchstring
and append a Percent(%) sybmol to either side of the parameter.
Then in your search button onclick event have it call the new function and bind the result.
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