双击在网格视图中显示的图像，然后双击从数据库oracle获取图像ID [英] double click on image displayed in grid view and after double click get image id from data base oracle
本文介绍了双击在网格视图中显示的图像，然后双击从数据库oracle获取图像ID的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
双击在网格视图中显示的图像以及双击从数据库oracle获取图像ID时如何获得价值?
我的VB代码如下所示
How to get value when double click on image displayed in grid view and after double click get image id from data base oracle ?
My VB CODE IS GIVEN BELOW
Imports System.Data
Imports System.IO
Imports System.Data.OleDb
Imports System.Data.OracleClient
Imports System.Web.UI.WebControls
Imports t_tool
Imports System.Web.UI.UserControl
Partial Class ShapeInGrid
Inherits System.Web.UI.Page
Dim con As New OracleConnection(ConfigurationManager.ConnectionStrings("OracleConnect1").ConnectionString)
Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
con.Open()
MsgBox(con.State)
If Not IsPostBack Then
populatedata()
End If
End Sub
Private Sub populatedata()
Try
Dim sql As String
sql = "select CTD_ORDER_ID, CTD_SHAPE_IMG from V_CAB_TAG_DTLS"
Dim da As New OracleDataAdapter(Sql, con)
Dim dt As New DataTable
If Not con.State = ConnectionState.Open Then
con.Open()
Dim ds As New DataSet()
da.Fill(ds)
gvShape.DataSource = ds
gvShape.DataBind()
End If
da.Fill(dt)
con.Close()
If dt.Rows.Count > 0 Then
gvShape.DataSource = dt
gvShape.DataBind()
Else
dt.Clear()
gvShape.DataSource = dt
gvShape.DataBind()
End If
Catch ex As Exception
Response.Write(ex.Message)
End Try
End Sub
Protected Sub gvShape_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles gvShape.RowDataBound
If e.Row.RowType = DataControlRowType.Header Then
Dim HeaderGrid As GridView = DirectCast(sender, GridView)
Dim HeaderGridRow As New GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Insert)
Dim HeaderCell As New TableCell()
HeaderCell = New TableCell()
HeaderCell.Text = "SHAPE CATEGORY"
HeaderCell.ColumnSpan = e.Row.Cells.Count
HeaderCell.HorizontalAlign = HorizontalAlign.Center
HeaderGridRow.Cells.Add(HeaderCell)
HeaderGridRow.BackColor = Drawing.Color.DarkBlue
HeaderGridRow.ForeColor = Drawing.Color.White
gvShape.Controls(0).Controls.AddAt(0, HeaderGridRow)
End If
If (e.Row.RowType = DataControlRowType.DataRow) Then
If ((e.Row.RowState = DataControlRowState.Edit) _
OrElse (e.Row.RowState = (DataControlRowState.Edit Or DataControlRowState.Alternate))) Then
e.Row.Attributes.Clear()
Else
Dim cellIndex As Integer = 2
Do While (cellIndex < e.Row.Cells.Count)
Dim _doubleClickButton As LinkButton = CType(e.Row.Cells(0).Controls(0), LinkButton)
' Get the javascript which is assigned to this LinkButton
Dim _jsDouble As String = ClientScript.GetPostBackClientHyperlink(_doubleClickButton, "")
' Add the cell index as the event argument parameter
_jsDouble = _jsDouble.Insert((_jsDouble.Length - 2), cellIndex.ToString)
' Add this javascript to the ondblclick Attribute of the row
e.Row.Cells(cellIndex).Attributes("ondblclick") = _jsDouble
cellIndex = (cellIndex + 1)
Loop
End If
End If
End Sub
Protected Sub gvShape_SelectedIndexChanging(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewSelectEventArgs) Handles gvShape.SelectedIndexChanging
Dim value As String = gvShape.Rows(e.NewSelectedIndex.ToString()).Cells(1).Text
Label1.Text = value
gvShape.SelectedIndex = e.NewSelectedIndex
'Dim id As String = gvShape.Rows(e.RowIndex).Cells(1).Text
Dim id As String = gvShape.Rows(e.NewSelectedIndex).Cells(1).Text
populatedata()
Label2.Text = gvShape.SelectedIndex
End Sub
Protected Sub gvShape_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles gvShape.SelectedIndexChanged
End Sub
Protected Sub gvShape_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles gvShape.RowCommand
Dim _gridView As GridView = CType(sender, GridView)
_gridView.EditIndex = -1
' Get the selected index and the command name
Dim _selectedIndex As Integer = Integer.Parse(e.CommandArgument.ToString)
Dim _commandName As String = e.CommandName
Dim _eventArgument As String = Request.Form("__EVENTARGUMENT")
Select Case (_commandName)
Case "DoubleClick"
_gridView.EditIndex = _selectedIndex
_gridView.SelectedIndex = -1
'populatedata()
Dim a As String
Dim b As String
Dim c As String
Dim d As String
'Label1.Text = gvShape.SelectedRow.Cells(0).Text
'b = gvShape.SelectedRow.Cells(0).Text
'c = gvShape.SelectedRow.Cells(0).Text
'd = gvShape.SelectedRow.Cells(0).Text
MsgBox(gvShape.SelectedRow.Cells(1).Text)
'gvShape.DataBind()
Dim CellValue As String = CStr(row("SupplierID"))
'Label2.Text = (Label1.Text + ("Double clicked GridView row at index " _
' + (_selectedIndex.ToString + (" on cell index " _
' + (_eventArgument + "<br />")))))
End Select
End Sub
Protected Overrides Sub Render(ByVal writer As HtmlTextWriter)
' The client scripts for GridView1 were created in GridView1_RowDataBound
For Each r As GridViewRow In gvShape.Rows
If (r.RowType = DataControlRowType.DataRow) Then
Dim cellIndex As Integer = 2
Do While (cellIndex < r.Cells.Count)
Page.ClientScript.RegisterForEventValidation((r.UniqueID + "$ctl00"), cellIndex.ToString)
Page.ClientScript.RegisterForEventValidation((r.UniqueID + "$ctl01"), cellIndex.ToString)
cellIndex = (cellIndex + 1)
Loop
End If
Next
MyBase.Render(writer)
End Sub
Private Sub gvShape_RowCreated(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles gvShape.RowCreated
For Each control As Control In e.Row.Cells(1).Controls
If TypeOf control Is System.Web.UI.WebControls.Image Then
Dim image As Image = DirectCast(control, System.Web.UI.WebControls.Image)
Dim sql As String
sql = "select CTD_ORDER_ID from V_CAB_TAG_DTLS where CTD_SHAPE_IMG= image "
Dim da As New OracleDataAdapter(sql, con)
Dim dt As New DataTable
If Not con.State = ConnectionState.Open Then
con.Open()
Dim ds As New DataSet()
da.Fill(ds)
gvShape.DataSource = ds
gvShape.DataBind()
End If
da.Fill(dt)
con.Close()
If dt.Rows.Count > 0 Then
gvShape.DataSource = dt
gvShape.DataBind()
Else
dt.Clear()
gvShape.DataSource = dt
gvShape.DataBind()
End If
End If
Next
End Sub
End Class
我的HTMLS代码如下所示
MY HTMLS CODE IS GIVEN BELOW
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="ShapeInGrid.aspx.vb" Inherits="ShapeInGrid" EnableEventValidation="false" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div align="center">
<br />
<asp:GridView ID="gvShape" runat="server" AutoGenerateColumns="False" Width ="100 px"
CellPadding="4" Font-Names="calibri" Font-Size="Small" ForeColor="#333333">
<RowStyle BackColor="#EFF3FB" Font-Names="calibri" HorizontalAlign="Left" />
<Columns>
<asp:ButtonField Text="SingleClick" CommandName="SingleClick" Visible="false"/>
<asp:ButtonField Text="DoubleClick" CommandName="DoubleClick" Visible="false"/>
<asp:TemplateField HeaderText="PHOTO">
<ItemTemplate>
<asp:Image ID="Image1" runat="server" Height="50" ImageUrl='<%# "ShapHandler.ashx?ImID=" + Eval("CTD_ORDER_ID") %>'
Width="50" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" HorizontalAlign="Left" />
<EditRowStyle BackColor="#2461BF" />
<AlternatingRowStyle BackColor="White" BorderStyle="None" />
</asp:GridView>
<br />
<br />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label><br />
<br />
<asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>
</div>
</form>
</body>
推荐答案
ctl00")，cellIndex.ToString) Page.ClientScript.RegisterForEventValidation((r.UniqueID + "
ctl00"), cellIndex.ToString) Page.ClientScript.RegisterForEventValidation((r.UniqueID + "
ctl01" )、cellIndex.ToString) cellIndex =(cellIndex + 1 ) 循环 结束 如果 下一步 MyBase .Render(编写器) 结束 子 私有 子 gvShape_RowCreated( ByVal 发件人目标 对象， ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs)对于 每个控件 As 控件在 e.Row.Cells( 1 )中. 如果 TypeOf 控件是 System.Web. UI.WebControls.Image 然后 Dim 图片 As 图片= DirectCast ( ，System.Web.UI.WebControls.Image) Dim sql As String sql = " Dim da As New OracleDataAdapter(sql，骗局) Dim dt As New DataTable 如果 不 con.State = ConnectionState.打开然后 con.Open() Dim ds As 新建 DataSet() da.Fill(ds) gvShape.DataSource = ds gvShape.DataBind() 结束 如果 da.Fill(dt) con.Close() 如果 dt.Rows.Count> 0 然后 gvShape.DataSource = dt gvShape.DataBind() 其他 dt.Clear() gvShape.DataSource = dt gvShape.DataBind() 结束 如果 结束 如果 下一步 结束 子 结束 类
ctl01"), cellIndex.ToString) cellIndex = (cellIndex + 1) Loop End If Next MyBase.Render(writer) End Sub Private Sub gvShape_RowCreated(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles gvShape.RowCreated For Each control As Control In e.Row.Cells(1).Controls If TypeOf control Is System.Web.UI.WebControls.Image Then Dim image As Image = DirectCast(control, System.Web.UI.WebControls.Image) Dim sql As String sql = "select CTD_ORDER_ID from V_CAB_TAG_DTLS where CTD_SHAPE_IMG= image " Dim da As New OracleDataAdapter(sql, con) Dim dt As New DataTable If Not con.State = ConnectionState.Open Then con.Open() Dim ds As New DataSet() da.Fill(ds) gvShape.DataSource = ds gvShape.DataBind() End If da.Fill(dt) con.Close() If dt.Rows.Count > 0 Then gvShape.DataSource = dt gvShape.DataBind() Else dt.Clear() gvShape.DataSource = dt gvShape.DataBind() End If End If Next End Sub End Class
我的HTMLS代码如下所示
MY HTMLS CODE IS GIVEN BELOW
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="ShapeInGrid.aspx.vb" Inherits="ShapeInGrid" EnableEventValidation="false" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div align="center">
<br />
<asp:GridView ID="gvShape" runat="server" AutoGenerateColumns="False" Width ="100 px"
CellPadding="4" Font-Names="calibri" Font-Size="Small" ForeColor="#333333">
<RowStyle BackColor="#EFF3FB" Font-Names="calibri" HorizontalAlign="Left" />
<Columns>
<asp:ButtonField Text="SingleClick" CommandName="SingleClick" Visible="false"/>
<asp:ButtonField Text="DoubleClick" CommandName="DoubleClick" Visible="false"/>
<asp:TemplateField HeaderText="PHOTO">
<ItemTemplate>
<asp:Image ID="Image1" runat="server" Height="50" ImageUrl='<%# "ShapHandler.ashx?ImID=" + Eval("CTD_ORDER_ID") %>'
Width="50" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" HorizontalAlign="Left" />
<EditRowStyle BackColor="#2461BF" />
<AlternatingRowStyle BackColor="White" BorderStyle="None" />
</asp:GridView>
<br />
<br />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label><br />
<br />
<asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>
</div>
</form>
</body>
几年前，我遇到了同样的问题.
终于，我们做了个把戏.
在初始qry本身中获取图像ID，并
行数据绑定事件中，将该id列的可见性样式设置为false.
然后，如您所知，您可以更改所选索引或行命令事件中的ID.
希望这会有所帮助.
Hi,
I was running out the same issue some years ago.
Finally we did a trick.
get the image id in initial qry itself and
in row data bound event set the visibility style for that id column to false.
Then as you know you can get the id in selected index changed or row command event.
Hope this helps.
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