我在gridview中有一个下拉列表，还有一个链接按钮，按钮和面板。如下所示。当我在下拉列表中选择一个值时，它将返回默认值
我试图将gridview放在updatepanel中，并将dropdrownlist的enable viewstate设置为true，这确实有帮助，请任何有建议的人。
<table align="center" cellpadding="0" cellspacing="0" class="box"
<tr>
<td colspan="4" class="pText" align="center">
<b>Treatment Details<br />
</b>
<asp:LinkButton ID="LinkButton6" runat="server" CssClass="grey1">Basic Billing</asp:LinkButton>
</td>
</tr>
</table>
<asp:Panel ID="Panel4" runat="server" Visible="False">
<table align="center" cellpadding="0" cellspacing="0"
style="height: 88px; width: 294px">
<tr>
<td align="right" class="grey1" colspan="2" style="height: 13px">
.:Basic Billing</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td class="pText" style="height: 19px">
Enter policy Number:</td>
<td style="height: 19px">
<asp:TextBox ID="TextBox1" runat="server" CssClass="textfields"> </asp:TextBox>
</td>
</tr>
<tr>
<td class="pText" style="height: 19px">
Enter Number of Basic Billing Item:</td>
<td style="height: 19px">
<asp:TextBox ID="TextBox2" runat="server" CssClass="textfields"></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
<td>
<asp:Button ID="Button1" runat="server" CssClass="textfields" Text="Submit" />
</td>
</tr>
<tr>
<td colspan="2">
<asp:UpdatePanel ID="UpdatePanel3" runat="server">
<ContentTemplate>
<asp:GridView ID="GridView2" runat="server"
AllowSorting="True" AlternatingRowStyle-CssClass="alt"
AutoGenerateColumns="False" CellPadding="2" CssClass="MyGridView"
OnRowCommand="GridView1_RowCommand" OnRowCreated="GridView1_RowCreated"
OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
PagerStyle-CssClass="pgr" Width="750px">
<Columns>
<asp:TemplateField HeaderText="S/N">
<ItemTemplate>
<%# Container.DataItemIndex + 1 %>
</ItemTemplate>
<HeaderStyle HorizontalAlign="Center" />
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Item">
<ItemStyle HorizontalAlign="Left" />
<HeaderStyle HorizontalAlign="Left" />
<ItemTemplate>
<asp:DropDownList ID="drpOutp" runat="server" CssClass="textfields" OnSelectedIndexChanged="drpOutp_SelectedIndexChanged" AutoPostBack="true" OnLoad="Load_OutpDetail">
</asp:DropDownList>
<controlstyle bordercolor="LightGray" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Unit Price">
<ItemStyle HorizontalAlign="Left" />
<HeaderStyle HorizontalAlign="Left" />
<ItemTemplate>
<asp:Label ID="lblUnit" runat="server"></asp:Label>
<controlstyle bordercolor="LightGray" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Quantity">
<ItemStyle HorizontalAlign="Left" />
<HeaderStyle HorizontalAlign="Left" />
<ItemTemplate>
<asp:TextBox ID="txteffdate" runat="server" CssClass="textfields" Height="15px" Width="80px"></asp:TextBox>
<controlstyle bordercolor="LightGray" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Total Price">
<ItemStyle HorizontalAlign="Left" />
<HeaderStyle HorizontalAlign="Left" />
<ItemTemplate>
<asp:Label ID="lblTotalP" runat="server"></asp:Label>
<controlstyle bordercolor="LightGray" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<HeaderStyle CssClass="tblPageHeaderII_new" />
<AlternatingRowStyle BackColor="#F4F4F4" />
<PagerStyle HorizontalAlign="Right" />
<EmptyDataTemplate>
<asp:Label ID="Label2" runat="server" Text="No Data Returned !"></asp:Label>
</EmptyDataTemplate>
</asp:GridView>
</ContentTemplate>
</asp:UpdatePanel>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
</tr>
</table>
</asp:Panel>
背后的代码
Protected Sub LinkButton1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles LinkButton1.Click
Panel3.Visible = True
End Sub
Protected Sub btnSubmit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
Try
Dim params() As SqlParameter = {New SqlParameter("@PolicyNumber", Trim(txtPolicy.Text)), _
New SqlParameter("@IPAddress", Request.ServerVariables("REMOTE_ADDR")), _
New SqlParameter("@PostedBy", Session("HMOUser"))}
Dim retValue As Data.DataRow = SqlHelper.ExecuteDataset(Connstring, CommandType.StoredProcedure, "HMO_Enrollee_CheckByPolicyNumber", params).Tables(0).Rows(0)
If retValue Is Nothing Then
lblmsg.Text = "Invalid Policy Number"
txtPolicy.Text = ""
Else
Session("Enr") = retValue.Table.Rows(0).Item("Enrollee_Number")
Catch ex As Exception
HMO_BLL.WriteLog(ex.Message + ex.StackTrace)
End Try
End If
Catch ex As Exception
lblmsg.Text = "Invalid Policy Number"
End Try
Dim nos As Integer() = New Integer(Convert.ToInt32(txtItemNo.Text) - 1) {}
For i As Integer = 0 To nos.Length - 1
nos(i) = i + 1
Next
GridView1.DataSource = nos
GridView1.DataBind()
End Sub
Public Sub Load_OutpDetail(ByVal sender As Object, ByVal e As EventArgs)
'If Not IsPostBack Then
Try
Dim ds As Data.DataSet = DAL.HMO_Outp_Detail_drpdown()
Dim Li As ListItem
Li = New ListItem
Li.Value = "0"
Li.Text = "-- Select --"
Dim drpOutp As DropDownList = DirectCast(sender, DropDownList)
drpOutp.AppendDataBoundItems = True
drpOutp.Items.Clear()
drpOutp.Items.Add(Li)
If Not ds Is Nothing And ds.Tables(0).Rows.Count > 0 Then
With drpOutp
.DataSource = ds.Tables(0)
.DataTextField = "OutpDetail"
.DataValueField = "OutpID"
.DataBind()
.SelectedIndex = 0
End With
Else
drpOutp.Enabled = False
End If
ds.Dispose()
Catch ex As Exception
HMO_BLL.WriteLog(ex.Message + ex.StackTrace)
End Try
'End If
End Sub
Protected Sub drpOutp_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs)
Try
For Each gvRow As GridViewRow In GridView1.Rows
Dim drpOutp As DropDownList = DirectCast(gvRow.FindControl("drpOutp"), DropDownList)
Dim lblEffDate As Label = DirectCast(gvRow.FindControl("lblEffDate"), Label)
'Dim drpOutp As DropDownList = DirectCast(sender, DropDownList)
Dim params() As SqlParameter = {New SqlParameter("@OutpID", drpOutp.SelectedValue), _
New SqlParameter("@ProviderID", HiddenField1.Value)}
Dim retValue As Data.DataRow = SqlHelper.ExecuteDataset(Connstring, CommandType.StoredProcedure, "HMO_Outp_Fetch_price", params).Tables(0).Rows(0)
lblEffDate.Text = retValue.Table.Rows(0).Item("Uprice")
Next
Catch ex As Exception
HMO_BLL.WriteLog(ex.Message + ex.StackTrace)
End Try
End Sub
谢谢
@Tim谢谢，这真的很有帮助我做了你所说的代码如下。但我需要一些数据绑定在同一gridview中的标签上，即我有SelectedIndexChanged事件处理程序。我仍然有一点挑战我希望能够在d行中的标签上绑定数据，其中d下拉列表中选择了一个值，但我似乎只绑定到第一行上的标签，而不管下拉列表是什么选择。任何指针??
<table align="center" cellpadding="0" cellspacing="0" class="box"
<tr>
<td colspan="4" class="pText" align="center">
<b>Treatment Details<br />
</b>
<asp:LinkButton ID="LinkButton6" runat="server" CssClass="grey1">Basic Billing</asp:LinkButton>
</td>
</tr>
</table>
<asp:Panel ID="Panel4" runat="server" Visible="False">
<table align="center" cellpadding="0" cellspacing="0"
style="height: 88px; width: 294px">
<tr>
<td align="right" class="grey1" colspan="2" style="height: 13px">
.:Basic Billing</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td class="pText" style="height: 19px">
Enter policy Number:</td>
<td style="height: 19px">
<asp:TextBox ID="TextBox1" runat="server" CssClass="textfields"> </asp:TextBox>
</td>
</tr>
<tr>
<td class="pText" style="height: 19px">
Enter Number of Basic Billing Item:</td>
<td style="height: 19px">
<asp:TextBox ID="TextBox2" runat="server" CssClass="textfields"></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
<td>
<asp:Button ID="Button1" runat="server" CssClass="textfields" Text="Submit" />
</td>
</tr>
<tr>
<td colspan="2">
<asp:UpdatePanel ID="UpdatePanel3" runat="server">
<ContentTemplate>
<asp:GridView ID="GridView2" runat="server"
AllowSorting="True" AlternatingRowStyle-CssClass="alt"
AutoGenerateColumns="False" CellPadding="2" CssClass="MyGridView"
OnRowCommand="GridView1_RowCommand" OnRowCreated="GridView1_RowCreated"
OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
PagerStyle-CssClass="pgr" Width="750px">
<Columns>
<asp:TemplateField HeaderText="S/N">
<ItemTemplate>
<%# Container.DataItemIndex + 1 %>
</ItemTemplate>
<HeaderStyle HorizontalAlign="Center" />
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Item">
<ItemStyle HorizontalAlign="Left" />
<HeaderStyle HorizontalAlign="Left" />
<ItemTemplate>
<asp:DropDownList ID="drpOutp" runat="server" CssClass="textfields" OnSelectedIndexChanged="drpOutp_SelectedIndexChanged" AutoPostBack="true" OnLoad="Load_OutpDetail">
</asp:DropDownList>
<controlstyle bordercolor="LightGray" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Unit Price">
<ItemStyle HorizontalAlign="Left" />
<HeaderStyle HorizontalAlign="Left" />
<ItemTemplate>
<asp:Label ID="lblUnit" runat="server"></asp:Label>
<controlstyle bordercolor="LightGray" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Quantity">
<ItemStyle HorizontalAlign="Left" />
<HeaderStyle HorizontalAlign="Left" />
<ItemTemplate>
<asp:TextBox ID="txteffdate" runat="server" CssClass="textfields" Height="15px" Width="80px"></asp:TextBox>
<controlstyle bordercolor="LightGray" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Total Price">
<ItemStyle HorizontalAlign="Left" />
<HeaderStyle HorizontalAlign="Left" />
<ItemTemplate>
<asp:Label ID="lblTotalP" runat="server"></asp:Label>
<controlstyle bordercolor="LightGray" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<HeaderStyle CssClass="tblPageHeaderII_new" />
<AlternatingRowStyle BackColor="#F4F4F4" />
<PagerStyle HorizontalAlign="Right" />
<EmptyDataTemplate>
<asp:Label ID="Label2" runat="server" Text="No Data Returned !"></asp:Label>
</EmptyDataTemplate>
</asp:GridView>
</ContentTemplate>
</asp:UpdatePanel>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
</tr>
背后的代码
Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
Try
If e.Row.RowType = DataControlRowType.DataRow Then
Dim ctrl As Control = e.Row.FindControl("drpOutp")
If ctrl IsNot Nothing Then
Dim ddl As DropDownList = TryCast(ctrl, DropDownList)
Dim ds As Data.DataSet = DAL.HMO_Outp_Detail_drpdown()
Dim Li As ListItem
Li = New ListItem
Li.Value = "0"
Li.Text = "-- Select --"
ddl.AppendDataBoundItems = True
ddl.Items.Clear()
ddl.Items.Add(Li)
If Not ds Is Nothing And ds.Tables(0).Rows.Count > 0 Then
With ddl
.DataSource = ds.Tables(0)
.DataTextField = "OutpDetail"
.DataValueField = "OutpID"
.DataBind()
.SelectedIndex = 0
End With
Else
ddl.Enabled = False
End If
ds.Dispose()
End If
End If
Catch ex As Exception
HMO_BLL.WriteLog(ex.Message + ex.StackTrace)
End Try
End Sub
Protected Sub drpOutp_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs)
Try
Dim ddl As DropDownList = TryCast(sender, DropDownList)
For Each gvRow As GridViewRow In GridView1.Rows
Dim ctrl As Control = TryCast(gvRow.FindControl("drpOutp"), DropDownList)
If ctrl IsNot Nothing Then
Dim ddl1 As DropDownList = DirectCast(ctrl, DropDownList)
Dim params() As SqlParameter = {New SqlParameter("@OutpID", ddl.SelectedValue), _
New SqlParameter("@ProviderID", HiddenField1.Value)}
Dim retValue As Data.DataRow = SqlHelper.ExecuteDataset(Connstring, CommandType.StoredProcedure, "HMO_Outp_Fetch_price", params).Tables(0).Rows(0)
Dim UnitP As Label = TryCast(gvRow.FindControl("lblUnit"), Label)
UnitP.Text = retValue.Table.Rows(0).Item("Uprice")
Exit For
End If
Next
Catch ex As Exception
HMO_BLL.WriteLog(ex.Message + ex.StackTrace)
End Try
End Sub
Protected Sub btnSave_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSave.Click
Dim nos As Integer() = New Integer(Convert.ToInt32(txtItemNo.Text) - 1) {}
For i As Integer = 0 To nos.Length - 1
nos(i) = i + 1
Next
GridView1.DataSource = nos
GridView1.DataBind()
End Sub
答案 0 :(得分：0)
不要使用Dropdown1_selected Index更改...
用户如下面的aspx文件....``
<asp:DropDownList ID="ddlClass" runat="server" SelectedValue='<%#Eval("ClassName") %>'>
<asp:ListItem></asp:ListItem>
<asp:ListItem>9</asp:ListItem>
<asp:ListItem>10</asp:ListItem>
<asp:ListItem>11</asp:ListItem>
<asp:ListItem>12</asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
</asp:TemplateField>
Gridview的edit_event中的CS类代码..
DropDownList ddlClassName =（DropDownList）（DetailsGrid.Rows [index2] .Cells [0] .FindControl（“ddlClass”））;
string ClassNamevalue = ddlClassName.SelectedValue.Trim（）;