在DataGrid里添加编辑和删除按纽列
对DataGrid的数据源里的进行删除更新操作...然后再重新绑定....
可一点删除或更新,他总提示脚本错误:_EVENTTARGET为空或不是对象
查了很多地方还是没找到答案,希望高手帮帮我,谢谢!
对DataGrid的数据源里的进行删除更新操作...然后再重新绑定....
可一点删除或更新,他总提示脚本错误:_EVENTTARGET为空或不是对象
查了很多地方还是没找到答案,希望高手帮帮我,谢谢!
{
string userID = (string)Session["user"];
SqlConnection con = DB.createCon();
SqlDataAdapter sda = new SqlDataAdapter();
sda.SelectCommand = new SqlCommand("select * from StockPrice where userID='"+userID+"'",con);
DataSet ds = new DataSet();
sda.Fill(ds,"StockPrice");
this.DataGrid1.DataKeyField="ruleID";
this.DataGrid1.DataSource=ds.Tables["StockPrice"]; this.DataGrid1.DataBind();
con.Close();
}
private void DataGrid1_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
string ruleID = this.DataGrid1.DataKeys[e.Item.ItemIndex].ToString();
SqlConnection con = DB.createCon();
SqlCommand cmd = new SqlCommand("delete from StockPrice where ruleID='" + ruleID + "'",con);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
this.BindtoDataGrid1();
}private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
if(e.Item.ItemType==ListItemType.Item || e.Item.ItemType==ListItemType.AlternatingItem)
{
e.Item.Attributes.Add("onmouseover","c=this.style.backgroundColor;this.style.backgroundColor='#6699ff'");
e.Item.Attributes.Add("onmouseout","this.style.backgroundColor=c;");
((LinkButton)(e.Item.Cells[5].Controls[0])).Attributes.Add("onclick","return confirm('确认删除？');");
}
}private void DataGrid1_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
{
this.DataGrid1.CurrentPageIndex=e.NewPageIndex;
this.BindtoDataGrid1();
}private void DataGrid1_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
this.DataGrid1.EditItemIndex=e.Item.ItemIndex;
this.BindtoDataGrid1();
}
private void DataGrid1_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
string ruleID = this.DataGrid1.DataKeys[e.Item.ItemIndex].ToString();
float stockLowPrice = Convert.ToSingle(((TextBox)(e.Item.Cells[1].Controls[1])).Text);
float stockHighPrice = Convert.ToSingle(((TextBox)(e.Item.Cells[2].Controls[1])).Text);
int SendTimes = Convert.ToInt32(((DropDownList)(e.Item.Cells[3].Controls[1])).SelectedValue);
SqlConnection con = DB.createCon();
con.Open();
SqlCommand cmd = new SqlCommand("update StockPrice set stockLowPrice="+stockLowPrice+",stockHighPrice="+stockHighPrice+
",SendTimes="+SendTimes+" where ruleID='"+ruleID+"'",con);
cmd.ExecuteNonQuery();
con.Close();
this.DataGrid1.EditItemIndex=-1;
this.BindtoDataGrid1();}
CellPadding="3" BackColor="White" BorderWidth="1px" BorderStyle="None" BorderColor="#CCCCCC">
<SelectedItemStyle Font-Size="13px" Font-Bold="True" ForeColor="White" BackColor="#669999"></SelectedItemStyle>
<EditItemStyle Font-Size="13px"></EditItemStyle>
<AlternatingItemStyle Font-Size="13px"></AlternatingItemStyle>
<ItemStyle Font-Size="13px" ForeColor="#000066"></ItemStyle>
<HeaderStyle Font-Size="15px" Font-Bold="True" HorizontalAlign="Center" ForeColor="White" BackColor="#006699"></HeaderStyle>
<FooterStyle ForeColor="#000066" BackColor="White"></FooterStyle>
<Columns>
<asp:BoundColumn DataField="stockID" ReadOnly="True" HeaderText="股票代码">
<HeaderStyle Width="80px"></HeaderStyle>
<ItemStyle HorizontalAlign="Center"></ItemStyle>
</asp:BoundColumn>
<asp:TemplateColumn HeaderText="股价低值">
<HeaderStyle Width="80px"></HeaderStyle>
<ItemStyle HorizontalAlign="Right"></ItemStyle>
<ItemTemplate>
<asp:Label id=Label1 runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.stockLowPrice") %>'>
</asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox id=txtLowPrice runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.stockLowPrice") %>' Width="70px">
</asp:TextBox>
<asp:CompareValidator id="CompareValidator1" runat="server" Display="Dynamic" ControlToValidate="txtLowPrice"
Operator="DataTypeCheck" Type="Double" ErrorMessage="股价低值是一个浮点数">*</asp:CompareValidator>
</EditItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="股票高值">
<HeaderStyle Width="80px"></HeaderStyle>
<ItemStyle HorizontalAlign="Right"></ItemStyle>
<ItemTemplate>
<asp:Label id=Label2 runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.stockHighPrice") %>'>
</asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox id=txtHighPrice runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.stockHighPrice") %>' Width="70px">
</asp:TextBox>
<asp:CompareValidator id="CompareValidator2" runat="server" Display="Dynamic" ControlToValidate="txtHighPrice"
Operator="DataTypeCheck" Type="Double" ErrorMessage="股票高值是一个浮点数">*</asp:CompareValidator>
</EditItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="提醒次数">
<HeaderStyle Width="80px"></HeaderStyle>
<ItemStyle HorizontalAlign="Center"></ItemStyle>
<ItemTemplate>
<asp:Label id=Label3 runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.SendTimes") %>'>
</asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList id="ddlSendTimes" runat="server" Width="70px">
<asp:ListItem Value="1">仅一次</asp:ListItem>
<asp:ListItem Value="5">5次</asp:ListItem>
<asp:ListItem Value="10">10次</asp:ListItem>
<asp:ListItem Value="-1">无限次</asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
</asp:TemplateColumn>
<asp:EditCommandColumn ButtonType="LinkButton" UpdateText="更新" CancelText="取消" EditText="编辑">
<HeaderStyle Width="70px"></HeaderStyle>
</asp:EditCommandColumn>
<asp:ButtonColumn Text="删除" CommandName="Delete">
<HeaderStyle Width="40px"></HeaderStyle>
</Columns>
<PagerStyle NextPageText="下一页" Font-Size="12px" PrevPageText="上一页" HorizontalAlign="Left" ForeColor="#000066"
BackColor="PowderBlue"></PagerStyle>
</asp:DataGrid>
CellPadding="3" BackColor="White" BorderWidth="1px" BorderStyle="None" BorderColor="#CCCCCC">显然你的datagrid没有设置datakeyfield的属性,比如你的标识列的字段是id那么设 DataKeyField="id"那么
string ruleID = this.DataGrid1.DataKeys[e.Item.ItemIndex].ToString();
这句怎么可能获得值捏?呵呵。要设置一下.
也少了this.DataGrid1.DataBind();
但,我在BindtoDataGrid1()方法里设置了datakeyfield属性的还有一点我想补冲一下,我刚写好程序时是没有问提可以更新删除的
后来莫名其妙的出了上面的问提,他说本地的脚本错误private void BindtoDataGrid1()
{
string userID = (string)Session["user"];
SqlConnection con = DB.createCon();
SqlDataAdapter sda = new SqlDataAdapter();
sda.SelectCommand = new SqlCommand("select * from StockPrice where userID='"+userID+"'",con);
DataSet ds = new DataSet();
sda.Fill(ds,"StockPrice");
this.DataGrid1.DataKeyField="ruleID";
this.DataGrid1.DataSource=ds.Tables["StockPrice"];this.DataGrid1.DataBind();
con.Close();
}
1. *.aspx页面中代码
<asp:EditCommandColumn ButtonType="LinkButton" UpdateText="更新" CancelText="取消" EditText="編輯">
<HeaderStyle ></HeaderStyle>
</asp:EditCommandColumn>
<asp:ButtonColumn Text="刪除" CommandName="delete">
<HeaderStyle ></HeaderStyle>
</asp:ButtonColumn>2. *.cs中的代码
private void grdSellGoods_UpdateCommand(object source, DataGridCommandEventArgs e)
{
if(this.ViewState["dtSaleGoods"] != null)
{
dtSaleGoods = (DataTable)(this.ViewState["dtSaleGoods"]);
}
string strAccount = ((TextBox)e.Item.FindControl("txtEditAccount")).Text.Trim();
string strPiNumber = ((TextBox)e.Item.FindControl("txtEditPiNumber")).Text.Trim();
string strRe = ((TextBox)e.Item.FindControl("txtEditRe")).Text.Trim(); if(strGoodsID.Trim().Length == 0)
{
this.Response.Write("<script language=\"javascript\">alert('" + _GoodsNoNull + "');</script>");
return;
}
if(strAccount.Trim().Length == 0)
{
this.Response.Write("<script language=\"javascript\">alert('" + _GoodsAccountNoNull + "');</script>");
return;
}
if(!Function.JudgeInteger(strAccount))
{
this.divShowPrompt.InnerHtml = this.GetPromptInfoHtml(Xframe.WebUI.EnumPromptInfoType.Warn,Xframe.WebUI.EnumProcType.Other,this._Account + this._MustInteger +"!","",false,0);
return;
}
DataSet dsGoodsInf = new DataSet();
DataRow drEdit = dtSaleGoods.Rows[e.Item.ItemIndex];
drEdit["GoodsID" ] = strGoodsID;
drEdit["ChiName"] = dsGoodsInf.Tables[0].Rows[0]["ChiName"].ToString();
drEdit["Account" ] = strAccount;
drEdit["PiNumber"] = strPiNumber;
drEdit["Price"] = decPrice;
drEdit["sum" ] = decPrice * decimal.Parse(strAccount);
drEdit["Re" ] = strRe;
dtSaleGoods.AcceptChanges();
this.grdSellGoods.EditItemIndex = -1;
this.ViewState["dtSaleGoods"] = dtSaleGoods;
this.FromViewStateBind();
} private void grdSellGoods_CancelCommand(object source, DataGridCommandEventArgs e)
{
this.grdSellGoods.EditItemIndex = -1;
this.FromViewStateBind();
} private void grdSellGoods_EditCommand(object source, DataGridCommandEventArgs e)
{
this.grdSellGoods.EditItemIndex = e.Item.ItemIndex;
this.FromViewStateBind();
}
我看了那篇BLOG,我这儿<body>没问题啊,有结束的大于号
不过还是多谢你！
新建个页面,然后把前台代码一些拷过去.然后后台代码别直接拷贝过去,因为会有些不同.你比如可以选择,选择deletecommand事件,然后他在对应后台就出现那个事件方法让你写代码，你再到原先的.CS里把对应里面的代码拷过去，以此类推..都拷贝过去，运行看看是否可以了，应该没问题.
我都晕了~
--------------------------------
编辑在
Private Sub DataGrid_EditCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs) Handles DataGrid.EditCommandEnd sub
--------------------------------------
更新
Private Sub DataGrid_UpdateCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs) Handles DataGrid.UpdateCommandEnd sub-----------------------------------
取消
Private Sub DataGrid_CancelCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs) Handles DataGrid.CancelCommandEnd Sub
.....你这些函数没有去设当然不行了...
grd.EditItemIndex = -1
display()
End Sub Private Sub grd_DeleteCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs) Handles grd.DeleteCommand
'点击“删除按扭”
Try
Dim sql As String
sql = "delete timelog where id='" & e.Item.Cells(0).Text & "'"
If UpdateData(sql) Then
Response.Write(ChickScript("删除成功！"))
Else
Response.Write(ChickScript("删除不成功！"))
End If
Catch ex As Exception End Try
grd.EditItemIndex = -1
display()
End Sub Private Sub grd_EditCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs) Handles grd.EditCommand
grd.EditItemIndex = e.Item.ItemIndex
display()
End Sub Private Sub grd_UpdateCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs) Handles grd.UpdateCommand
'点击“更新”按扭
Dim SQL As String
Try
'Dim LogD As String = CType(e.Item.Cells(4).Controls(1), TextBox).Text
'Dim AP As String = CType(e.Item.Cells(2).Controls(1), DropDownList).SelectedValue
'Dim StartD = CType(e.Item.Cells(3).Controls(1), TextBox).Text
Dim StateStart As String = CType(e.Item.Cells(4).Controls(1), DropDownList).SelectedValue
'Dim EndD As String = CType(e.Item.Cells(5).Controls(1), TextBox).Text
Dim StateEnd As String = CType(e.Item.Cells(6).Controls(1), DropDownList).SelectedValue
Dim Sign As String = CType(e.Item.Cells(7).Controls(1), DropDownList).SelectedValue
'Dim LogBy As String = CType(e.Item.Cells(7).Controls(1), TextBox).Text
Dim ID As String = e.Item.Cells(0).Text SQL = "UPDATE TimeLog SET StateStart='{0}',StateEnd='{1}',Sign='{2}' WHERE ID={3}"
SQL = String.Format(SQL, StateStart, StateEnd, Sign, ID) If UpdateData(SQL) = False Then
Response.Write(ChickScript("更新不成功！"))
End If
Catch ex As Exception
LogError("workedit.aspx :更新出错：" ,ex)
End Try
grd.EditItemIndex = -1
display()
End Sub Private Sub grd_PageIndexChanged(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridPageChangedEventArgs) Handles grd.PageIndexChanged
grd.CurrentPageIndex = e.NewPageIndex
display()
End Sub Private Sub grd_ItemCreated(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles grd.ItemCreated
Try
Select Case e.Item.ItemType
Case ListItemType.Item, ListItemType.AlternatingItem, ListItemType.EditItem
'确认是否删除
Dim myTableCell As TableCell
myTableCell = e.Item.Cells(10) '其中数字9是"删除"按纽所处单元格的位置
Dim myDeleteButton As LinkButton
myDeleteButton = myTableCell.Controls(0)
myDeleteButton.Attributes.Add("onclick", "return confirm('请确认是否真的要删除该记录?');")
End Select
Catch ex As Exception
LogError("workedit.aspx 增加删除确认按钮时出错:" ,ex)
End Try
End Sub Private Sub grd_ItemCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs) Handles grd.ItemCommand
'脚注中的新增按钮
If (e.CommandName = "Insert") Then
Try
Dim sql As String
Dim f1 As TextBox = CType(e.Item.FindControl("insert01"), TextBox) '上班日期
Dim f2 As DropDownList = CType(e.Item.FindControl("insert02"), DropDownList) '午别
Dim f3 As TextBox = CType(e.Item.FindControl("insert03"), TextBox) '上班时间
Dim f4 As DropDownList = CType(e.Item.FindControl("insert04"), DropDownList) '上班状态
Dim f5 As TextBox = CType(e.Item.FindControl("insert05"), TextBox) '下班时间
Dim f6 As DropDownList = CType(e.Item.FindControl("insert06"), DropDownList) '下班状态
Dim f7 As DropDownList = CType(e.Item.FindControl("insert07"), DropDownList) '标识 sql = "insert into timelog(logd,startd,statestart,endd,stateend,ap,logby,sign) values('" & f1.Text & "','" & f3.Text & "','" & f4.SelectedValue & "','" & f5.Text & "','" & f6.SelectedValue & "','" & f2.SelectedValue & "','" & userid.Text & "'," & f7.SelectedValue & ")"
If UpdateData(sql) = False Then
Response.Write(ChickScript("新增不成功！"))
End If
Catch ex As Exception
LogError("workedit.aspx新增记录出错：" ,ex)
End Try
End If
display()
End Sub Private Sub grd_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles grd.ItemDataBound
'添加编辑时列表框下拉选择功能
Try
'If e.Item.Cells(7).Text = "" Then
' Select Case CType(e.Item.Cells(7).Controls(1), Label).Text
' Case 0
' CType(e.Item.Cells(7).Controls(1), Label).Text = "正常"
' Case 1
' CType(e.Item.Cells(7).Controls(1), Label).Text = "调休"
' Case 2
' CType(e.Item.Cells(7).Controls(1), Label).Text = "请假"
' Case 3
' CType(e.Item.Cells(7).Controls(1), Label).Text = "加班"
' Case 4
' CType(e.Item.Cells(7).Controls(1), Label).Text = "出差"
' End Select
'End If
If e.Item.ItemType = ListItemType.EditItem Then
Dim drv As DataRowView
Dim current As String
Dim ddl As DropDownList
'上班状态
drv = CType(e.Item.DataItem, DataRowView)
current = drv("StateStart").ToString()
ddl = CType(e.Item.FindControl("DropDownList1"), DropDownList)
ddl.SelectedIndex = ddl.Items.IndexOf(ddl.Items.FindByValue(current))
'下班状态
drv = CType(e.Item.DataItem, DataRowView)
current = drv("StateEnd").ToString()
ddl = CType(e.Item.FindControl("DropDownList2"), DropDownList)
ddl.SelectedIndex = ddl.Items.IndexOf(ddl.Items.FindByValue(current))
'标识
drv = CType(e.Item.DataItem, DataRowView)
current = drv("sign").ToString()
ddl = CType(e.Item.FindControl("DropDownList3"), DropDownList)
ddl.SelectedIndex = ddl.Items.IndexOf(ddl.Items.FindByValue(current))
End If
Catch ex As Exception
LogError("auditing/workedit.aspx:grd_ItemDataBound 出错 : ", ex)
End Try End Sub
你说的是这种设置吗？private void InitializeComponent()
{ this.DataGrid1.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_PageIndexChanged);
this.btnDelete1.Click += new System.EventHandler(this.btnDelete1_Click);
this.btnDelete2.Click += new System.EventHandler(this.btnDelete2_Click);
this.btnDelete3.Click += new System.EventHandler(this.btnDelete3_Click);
this.btnDelete4.Click += new System.EventHandler(this.btnDelete4_Click);
this.Load += new System.EventHandler(this.Page_Load);
。
。
。