如何在ASP.Net中的Label中显示GridView的Checked（Selected）CheckBox行（数据） [英] How to display Checked (Selected) CheckBox rows (data) of GridView in Label in ASP.Net

问题描述

<div style="height: 150px; width: 221px;">
                <input type="text" placeholder="Find" id="txtSearchCompany" style="width: 100%;" class="textboxWidth" />
                <div style="height: 150px; width: 221px; overflow: auto;" class="textboxWidth">
                    <asp:GridView ID="gvCompanyListing" runat="server" AutoGenerateColumns="False" ShowHeader="False" GridLines="None">
                        <Columns>
                            <asp:TemplateField>
                                <ItemTemplate>
                                    <asp:CheckBox ID="cbSelect" CssClass="gridCB" runat="server" ItemStyle-Width="10%"  OnCheckedChanged="Select_OnCheckedChanged" AutoPostBack="true" ></asp:CheckBox>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:BoundField DataField="CompanyInfo" SortExpression="CompanyInfo" ItemStyle-Width="92%" ItemStyle-Height="1px"></asp:BoundField>
                        </Columns>
                    </asp:GridView>
                </div>
            </div>
        </div>
        <asp:Label ID="lblmsg" runat="server" />
</div>

这是我的aspx页面。



并且代码落后

this is my aspx page.

And in code behind

protected void Select_OnCheckedChanged(object sender, EventArgs e)
       {
           string name = string.Empty;
           foreach (GridViewRow row in this.gvCompanyListing.Rows)
           {
               CheckBox chkSelect = row.FindControl("cbSelect") as CheckBox;
               if (chkSelect.Checked)
               {
                   name += row.Cells[1].Text + ",";
                   String[] tokens = name.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries);
                   this.lblmsg.Text = string.Join("<br />", tokens);
               }
           }

       }

它正确显示选中的答案，

但是在取消选中它会删除标签中的所有数据，期望最后一个未选中的选项。

（在检查它时给出'E，B，C，D'并取消选中，最后未选中的选项将保留在标签中）我将如何解决我的问题。

it displays the checked answers correctly,
but on unchecking it remove all the data from label expect the last unchecked option.
(On checking it give 'E,B,C,D' and on unchecking ,the last unchecked options will remain in label)How i will solve my issue.

推荐答案

将您的功能更改为

Change Your function to

protected void Select_OnCheckedChanged(object sender, EventArgs e)
       {
           string name = string.Empty;
           foreach (GridViewRow row in this.gvCompanyListing.Rows)
           {
               CheckBox chkSelect = row.FindControl("cbSelect") as CheckBox;
               if (chkSelect.Checked)
               {
                   name += row.Cells[1].Text + ",";                  
               }
           }
 String[] tokens = name.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries);
                   this.lblmsg.Text = string.Join("<br />", tokens);
 
       }

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