Gridview 复选框oncheckchanged事件-复选框上的按钮可见
我对复选框oncheckchanged事件有问题 复选框在gridview中,如果选中复选框,我希望按钮可见 如果选中了一个或多个复选框,则按钮将可见,但如果选中了“瞬间1”复选框,则即使选中了另一个复选框,按钮也将不可见 请求帮助Gridview 复选框oncheckchanged事件-复选框上的按钮可见,gridview,checkbox,oncheckedchanged,Gridview,Checkbox,Oncheckedchanged,我对复选框oncheckchanged事件有问题 复选框在gridview中,如果选中复选框,我希望按钮可见 如果选中了一个或多个复选框,则按钮将可见,但如果选中了“瞬间1”复选框,则即使选中了另一个复选框,按钮也将不可见 请求帮助 <asp:Button ID="BtnRequestCartons" runat="server" Text="Request Cartons" BorderStyle="Ridge" onclick="BtnRequestCart
<asp:Button ID="BtnRequestCartons" runat="server" Text="Request Cartons"
BorderStyle="Ridge" onclick="BtnRequestCartons_Click" Visible="False" />
<asp:GridView ID="GridViewcrtreq" runat="server" AllowPaging="False"
AutoGenerateColumns="False" DataSourceID="SqlDataSource5" CellPadding="0"
ForeColor="#333333" GridLines="None" PageSize="5" BorderColor="#CCCCCC"
BorderStyle="Solid" BorderWidth="1px" ShowFooter="true" Width="100%"
HeaderStyle-CssClass="gvHeader"
>
<AlternatingRowStyle BackColor="white" ForeColor="#284775" />
<Columns>
<asp:TemplateField>
<HeaderTemplate>
<tr class="gvHeader" align="right">
<th style="width:0px"></th>
<th colspan="3">
</th>
</tr>
<tr class="gvHeader">
<th></th>
<th>
<asp:CheckBox ID="chkSelectAll" runat="server" Text="" onclick="javascript:SelectAllCheckboxes(this);"/>
</th>
<th align="left">Carton ID</th>
<th align="left">Carton Status</th>
</tr>
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="chkSelectAdd" OnCheckedChanged="GridViewcrtreq_OnCheckedChanged" runat="server" AutoPostBack="True" />
<td align="left"><%# Eval("CartonID")%></td>
<td align="left"><%# Eval("CartonStatus")%></td>
</ItemTemplate>
<FooterTemplate>
</FooterTemplate>
</asp:TemplateField>
</Columns>
<EditRowStyle BackColor="#999999" />
<FooterStyle BackColor="White" Font-Bold="True" ForeColor="Black" BorderColor="Silver" BorderStyle="Solid" BorderWidth="1" />
<HeaderStyle BackColor="#D6D6C2" Font-Bold="True" ForeColor="Black" HorizontalAlign="Center" BorderWidth="1" BorderStyle="Solid" BorderColor="#999999" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" BorderColor="Silver" BorderWidth="1" BorderStyle="Solid" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#E9E7E2" />
<SortedAscendingHeaderStyle BackColor="#506C8C" />
<SortedDescendingCellStyle BackColor="#FFFDF8" />
<SortedDescendingHeaderStyle BackColor="#6F8DAE" />
</asp:GridView>
protected void GridViewcrtreq_OnCheckedChanged(object sender, EventArgs e)
{
CheckBox chkSelectAdd = sender as CheckBox;
if (chkSelectAdd.Checked == true)
{
BtnRequestCartons.Visible = true;
}
if (chkSelectAdd.Checked == false)
{
BtnRequestCartons.Visible = false;
}
}
纸箱标识
纸箱状态
受保护的void GridViewcrtreq_OnCheckedChanged(对象发送方,事件参数e)
{
复选框chkSelectAdd=发件人为复选框;
if(chkSelectAdd.Checked==true)
{
BtnRequestCartons.Visible=真;
}
if(chkSelectAdd.Checked==false)
{
BtnRequestCartons.Visible=假;
}
}
最简单的方法是检查每个CheckBoxCell,查看其中一个单元格的检查状态每次更改时是否检查了任何复选框单元格
下面的代码假定您的CheckBoxColumn是第一列。如果CheckBoxColumn不是第一列(索引:0),则在单元格[之后更改0以匹配CheckBoxColumn的列索引
protected void GridViewcrtreq_OnCheckedChanged(object sender, EventArgs e){
CheckBox chkSelectAdd = sender as CheckBox;
if (chkSelectAdd.Checked == true){
BtnRequestCartons.Visible = true;
}else{
foreach (DataGridViewRow row in dataGridView1.Rows) {
button1.Enabled = false;
if ((bool)row.Cells[0].Value == true) {
BtnRequestCartons.Enabled = true;
break;
}
}
}
}
请尝试此代码
<form id="form1" runat="server">
<div>
<asp:Button ID="btnchkvisible" runat="server" Text="visible" Visible="false" />
<asp:GridView ID="grvsch" runat="server" AutoGenerateColumns="false" BorderColor="#808081" BorderStyle="Solid" BorderWidth="1" Width="99.5%" Style="margin-left: 2px; margin-right: 2px; margin-top: 2px;" ShowHeader="true" ShowFooter="false"
GridLines="None">
<RowStyle VerticalAlign="Middle" HorizontalAlign="Center" />
<HeaderStyle VerticalAlign="Middle" HorizontalAlign="Center" />
<Columns>
<asp:TemplateField>
<HeaderTemplate>
<asp:Label ID="lblhdoseno" runat="server" Text="Dose Number"></asp:Label>
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="chk" runat="server" OnCheckedChanged="chk_CheckedChanged" AutoPostBack="true" />
<asp:Label ID="lbldoseno" runat="server" Text='<%#Eval("date") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
</form>
这是代码隐藏
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
DataTable dtnew = new DataTable();
dtnew.Columns.Add("date");
for (int i = 0; i < 5; i++)
{
var rows = dtnew.NewRow();
rows["date"] = DateTime.UtcNow.AddDays(i);
dtnew.Rows.Add(rows);
}
grvsch.DataSource = dtnew;
grvsch.DataBind();
}
}
protected void chk_CheckedChanged(object sender, EventArgs e)
{
bool onechk = false;
foreach (GridViewRow row in grvsch.Rows)
{
CheckBox chkbox = (CheckBox)row.FindControl("chk");
if (chkbox.Checked)
{
onechk = true;
break;
}
else
{
}
}
if (onechk == true)
{
btnchkvisible.Visible = true;
}
else
{
btnchkvisible.Visible = false;
}
}
受保护的无效页面加载(对象发送方,事件参数e)
{
如果(!Page.IsPostBack)
{
DataTable dtnew=新DataTable();
dtnew.Columns.Add(“日期”);
对于(int i=0;i<5;i++)
{
var rows=dtnew.NewRow();
行[“日期”]=DateTime.UtcNow.AddDays(i);
dtnew.Rows.Add(行);
}
grvsch.DataSource=dtnew;
grvsch.DataBind();
}
}
受保护的void chk_CheckedChanged(对象发送方,事件参数e)
{
bool-onechk=false;
foreach(grvsch.Rows中的GridViewRow行)
{
复选框chkbox=(复选框)row.FindControl(“chk”);
如果(chkbox.Checked)
{
onechk=true;
打破
}
其他的
{
}
}
如果(onechk==true)
{
btnchkvisible.Visible=true;
}
其他的
{
btnchkvisible.Visible=false;
}
}