Asp gridview fail get checkbox value

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ASP.NET

<asp:GridView ID="GrdRole" runat="server" CssClass="table table-striped table-bordered table-hover" EmptyDataText="No Records Found" DataKeyNames="RoleID"
             AllowPaging="true" AutoGenerateColumns="false" AutoGenerateDeleteButton="false" RowStyle-HorizontalAlign="Left" OnPageIndexChanging="GrdRole_PageIndexChanging"
             HeaderStyle-HorizontalAlign="Center" GridLines="None" PageSize="10" RowStyle-CssClass="gradeX" AlternatingRowStyle-CssClass="gradeA">
             <Columns>
                 <asp:TemplateField HeaderText="Select" ItemStyle-Width="10px">
                     <ItemTemplate>
                         <input type="checkbox" runat="server" id="emp" value='<%#Eval("EmployeeNo")%>' />
                     </ItemTemplate>
                 </asp:TemplateField>
                 <asp:TemplateField HeaderText="User Name" ItemStyle-Width="90%">
                     <ItemTemplate>
                         <label><%#DataBinder.Eval(Container.DataItem, "Name")%></label>
                     </ItemTemplate>
                 </asp:TemplateField>
             </Columns>
             <PagerStyle HorizontalAlign="Right" CssClass="pagination-ys" />
         </asp:GridView>

C#

protected void click(object sender, EventArgs e)
{
    string data = "";
    foreach (GridViewRow row in GrdRole.Rows)
    {
        if (row.RowType == DataControlRowType.DataRow)
        {
            CheckBox chkRow = (row.Cells[0].FindControl("emp") as CheckBox);
            if (chkRow.Checked)
            {
                string storid = row.Cells[1].Text;
                data = data + storid + "<br>";
            }
        }
    }
    lblmsg.Text = data;
}

why lblmsg.text is empty?i did tick the checkbox

What I have tried:

any idea why it cant get my checkbox value?please help,thank you.

Posted 28-Jun-16 19:41pm

KyLim0211

Updated 29-Jun-16 20:17pm

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2 solutions

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Karthik_Mahalingam · Answer 1 · 2016-06-28T20:20:00

Solution 1

try this

C#

protected void Button1_Click(object sender, EventArgs e)
      {
          string data = "";
          foreach (GridViewRow row in GrdRole.Rows)
          {
              if (row.RowType == DataControlRowType.DataRow)
              {

                 CheckBox chkRow = (row.FindControl("emp") as CheckBox);
                  if (chkRow.Checked)
                  {
                      string storid = (row.FindControl("lbl") as Label).Text;
                      data = data + storid + "<br>";
                  }
              }
          }
          lblmsg.Text = data;
      }

ASP.NET

<columns>
                <asp:templatefield headertext="Select" itemstyle-width="10px"  >
                    <itemtemplate>
                        <asp:checkbox id="emp" runat="server" text="<%#Eval("EmployeeNo")%>" />
                    </itemtemplate>
                </asp:templatefield>
                <asp:templatefield headertext="User Name" itemstyle-width="90%"  >
                    <itemtemplate>
                        <asp:label id="lbl" runat="server" text="<%#Eval("Name")%>"></asp:label>
                    </itemtemplate>
                </asp:templatefield>
            </columns>

Posted 28-Jun-16 20:20pm

Karthik_Mahalingam

v2

Comments

KyLim0211 30-Jun-16 0:49am

sorry i use your code but error : The server tag is not well formed.
<asp:checkbox id="emp" runat="server" text="<%#Eval("EmployeeNo")%>" />

Karthik_Mahalingam 30-Jun-16 0:51am

<asp:checkbox id="emp" runat="server" text='<%#Eval("EmployeeNo")%>' />

KyLim0211 30-Jun-16 1:44am

sorry your method not working too,it cant get the input

Karthik_Mahalingam 30-Jun-16 2:04am

post your code.

Karthik_Mahalingam 30-Jun-16 2:12am

this is what i have tried..

aspx code in Edit fiddle - JSFiddle[^]

protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack) return;
DataTable dt = new DataTable();
dt.Columns.Add("EmployeeNo");
dt.Columns.Add("Name");
dt.Columns.Add("RoleID");
dt.Rows.Add("Moto", "Nexus",1);
dt.Rows.Add("Apple", "Iphone",2);
dt.Rows.Add("Sony", "Vaio",3);
dt.Rows.Add("Samsung", "Edge",4);
GrdRole.DataSource = dt;
GrdRole.DataBind();

}

protected void Button1_Click(object sender, EventArgs e)
{
string data = "";
foreach (GridViewRow row in GrdRole.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{

CheckBox chkRow = (row.FindControl("emp") as CheckBox);
if (chkRow.Checked)
{
string storid = (row.FindControl("lbl") as Label).Text;
data = data + storid + "<br>";
}
}
}
lblmsg.Text = data;
}

KyLim0211 30-Jun-16 2:25am

output is empty when i click the button

Karthik_Mahalingam 30-Jun-16 2:27am

use this
<asp:label id="lbl" runat="server" text='<%#Eval("Name")%>'>

KyLim0211 · Answer 2 · 2016-06-29T20:17:00

ASP.NET

  <asp:gridview id="GrdRole" runat="server" cssclass="table table-striped table-bordered table-hover" emptydatatext="No Records Found" datakeynames="RoleID" xmlns:asp="#unknown">
                AllowPaging="true" AutoGenerateColumns="false" AutoGenerateDeleteButton="false" RowStyle-HorizontalAlign="Left" OnPageIndexChanging="GrdRole_PageIndexChanging"
                HeaderStyle-HorizontalAlign="Center" GridLines="None" PageSize="10" RowStyle-CssClass="gradeX" AlternatingRowStyle-CssClass="gradeA">
                <columns>
                    <asp:templatefield headertext="Select" itemstyle-width="10px">
                        <itemtemplate>
                            <input type="checkbox" runat="server" id="emp" value='<%#Eval("EmployeeNo")%>' />
                        </itemtemplate>
                    </asp:templatefield>
                    <asp:templatefield headertext="User Name" itemstyle-width="90%">
                        <itemtemplate>
                            <label><%#DataBinder.Eval(Container.DataItem, "Name")%></label>
                        </itemtemplate>
                    </asp:templatefield>
                </columns>
                <pagerstyle horizontalalign="Right" cssclass="pagination-ys" />
            </asp:gridview>
<td>
            <asp:button id="submit_button" text="Update" cssclass="btn btn-success" runat="server" onclick="UpdateBtm" xmlns:asp="#unknown" />
        </td>

my c#

C#

protected void UpdateBtm(object sender, EventArgs e)
   {
       foreach (GridViewRow row in GrdRole.Rows)
       {
           if (row.RowType == DataControlRowType.DataRow)
           {
               CheckBox chkRow = (row.Cells[0].FindControl("emp") as CheckBox);
               if (chkRow.Checked)
               {
                   string storid = row.Cells[0].Text;
                   ClientScript.RegisterStartupScript(GetType(), "alert", "alert('" + storid + "');", true);
               }
           }
       }

   }