css class not applying for linkbutton from code behind

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nagapavanich

Member

1 Points

37 Posts

css class not applying for linkbutton from code behind

Apr 24, 2019 12:41 PM|nagapavanich|LINK

I have repeater as below

<asp:Repeater ID="rptPager" runat="server">
<ItemTemplate>
<asp:LinkButton ID="lnkPage" runat="server" Text='<%#Eval("Text") %>' CommandArgument='<%# Eval("Value") %>'
Enabled='<%# Eval("Enabled") %>' CssClass="GridPager" OnCommand="Page_Changed"></asp:LinkButton>
</ItemTemplate>
</asp:Repeater>.

I want to change the css from code behind after clicking

protected void Page_Changed(object sender, CommandEventArgs e)
{
int pageIndex = int.Parse((sender as LinkButton).CommandArgument);
FillSearchGrid(pageIndex);

LinkButton lnkPage = (LinkButton)sender;
if (lnkPage != null)
{
lnkPage.CssClass = "aspNetDisabled GridPager";
}
}

does not apply css after clicking on nos I tried

protected void rptPager_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
LinkButton my_btn = (LinkButton)e.Item.FindControl("lnkPage");
if (my_btn != null) my_btn.CssClass = "aspNetDisabled GridPager";
}

but this is applying css with out clicking on page load i want after page plese suggest

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samwu

Member

650 Points

222 Posts

Re: css class not applying for linkbutton from code behind

Apr 25, 2019 08:21 AM|samwu|LINK

Hi nagapavanich,

I tried to reproduce your problem, but my code works fine, Is your Enabled property set to false?

The code：

Aspx.cs:
protected void Page_Load(object sender, EventArgs e)
        {
            if (!this.IsPostBack)
            {
                DataTable dt = new DataTable();
                dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Value"), new DataColumn("Text"), new DataColumn("Enabled", typeof(bool)) });
                dt.Rows.Add(1, "Sam1", true);
                dt.Rows.Add(2, "Sam2", true);
                dt.Rows.Add(3, "Sam3", true);
                dt.Rows.Add(4, "Sam4", true);
                rptPager.DataSource = dt;
                rptPager.DataBind();
            }
        }

       

        protected void Page_Changed(object sender, CommandEventArgs e)
        {
            LinkButton lnkPage = (LinkButton)sender;
            if (lnkPage != null)
            {
                lnkPage.CssClass = "bb";
            }

        }
Aspx:
<asp:Repeater ID="rptPager" runat="server">
                <ItemTemplate>
                    <asp:LinkButton ID="lnkPage" runat="server" Text='<%#Eval("Text") %>' CommandArgument='<%# Eval("Value") %>' 
                        CssClass="aa" OnCommand="Page_Changed" Enabled='<%# Eval("Enabled") %>'></asp:LinkButton>
                </ItemTemplate>
            </asp:Repeater>
Css:
.aa {
          font-size:small
        }
        .bb{
           font-size:x-large
        }

The Result:

Best Regards,

Sam

MSDN Community Support
Please remember to click "Mark as Answer" the responses that resolved your issue.
If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.

Reply

nagapavanich

Member

1 Points

37 Posts

Re: css class not applying for linkbutton from code behind

Apr 25, 2019 09:02 AM|nagapavanich|LINK

Thank you for your replay

Iam using the below link custom paging

URL:https://www.aspsnippets.com/Articles/ASPNet-GridView-Custom-Paging-with-PageSize-Change-Dropdown.aspx

I have a gridview with 8000+ records in Fillgrid method iam calling

protected void FillSearchGrid(int pageIndex)
{

PopulatePager(TotalRecord, 1);

}

private void PopulatePager(int recordCount, int currentPage)
{
double dblPageCount = (double)((decimal)recordCount / decimal.Parse(ddlPageSize.SelectedValue));
int pageCount = (int)Math.Ceiling(dblPageCount);
List<ListItem> pages = new List<ListItem>();
if (pageCount > 0)
{
pages.Add(new ListItem("First", "1", currentPage > 1));
for (int i = 1; i <= pageCount; i++)
{
pages.Add(new ListItem(i.ToString(), i.ToString(), i != currentPage));
}
pages.Add(new ListItem("Last", pageCount.ToString(), currentPage < pageCount));
//pages.Attributes.Add("class", "3");
}
rptPager.DataSource = pages;
rptPager.DataBind();
}
protected void PageSize_Changed(object sender, EventArgs e)
{
//this.GetCustomersPageWise(1);
FillSearchGrid(1);
}

protected void Page_Changed(object sender, CommandEventArgs e)
{
int pageIndex = int.Parse((sender as LinkButton).CommandArgument);
FillSearchGrid(pageIndex);
ViewState["pageIndex"] = pageIndex;

//LinkButton lnkPage=new LinkButton();
//rptPager.FindControl(lnkPage)

// LinkButton lb = sender as LinkButton;
//GridViewRow grow = (GridViewRow)lb.NamingContainer;
//string EpId = gv_products.DataKeys[grow.RowIndex].Values[0].ToString();//EpId

LinkButton lnkPage = (LinkButton)sender;
if (lnkPage != null)
{
lnkPage.CssClass = "aspNetDisabled GridPager";
}
// RepeaterItem item = (sender as LinkButton).NamingContainer as RepeaterItem;

//LinkButton lb=item.FindControl("lnkPage") as LinkButton;
////lb.CssClass = "aspNetDisabled";
////lb.Attributes.Remove(
//if (lb != null)
//{
//lb.Attributes.Add("class", "aspNetDisabled GridPager");
//}

//lb.Attributes["class"] = lb.Attributes["class"].Replace("GridPager", "aspNetDisabled GridPager");
}

aspx code

</style>

<asp:Repeater ID="rptPager" runat="server">
<ItemTemplate>
<asp:LinkButton ID="lnkPage" runat="server" Text='<%#Eval("Text") %>' CommandArgument='<%# Eval("Value") %>'
Enabled='<%# Eval("Enabled") %>' CssClass="GridPager" OnCommand="Page_Changed"></asp:LinkButton>
</ItemTemplate>
</asp:Repeater>

Enabled is true when i click on 2

Please check my code thank you in advance

Reply

samwu

Member

650 Points

222 Posts

Re: css class not applying for linkbutton from code behind

Apr 26, 2019 07:25 AM|samwu|LINK

Hi nagapavanich,

Based on your code, I tried to reproduce your problem and found that CSS can be changed in the rptPager_ItemDataBound() method. You can refer to my code below.

The Code:

protected void Page_Load(object sender, EventArgs e)
        {
            if (!this.IsPostBack)
            {
                DataTable dt = new DataTable();
                dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Value"), new DataColumn("Text"), new DataColumn("Enabled", typeof(bool)) });
                dt.Rows.Add(1, "Sam1", true);
                dt.Rows.Add(2, "Sam2", true);
                dt.Rows.Add(3, "Sam3", true);
                dt.Rows.Add(4, "Sam4", true);
                rptPager.DataSource = dt;
                rptPager.DataBind();
            }
        }
        private void GetCustomersPageWise(int pageIndex)
        {
           
                 int recordCount = 3000;
                 this.PopulatePager(recordCount, pageIndex);
           
        }
        private void PopulatePager(int recordCount, int currentPage)
        {
            double dblPageCount = (double)((decimal)recordCount /500);
            int pageCount = (int)Math.Ceiling(dblPageCount);
            List<ListItem> pages = new List<ListItem>();
            if (pageCount > 0)
            {
                pages.Add(new ListItem("First", "1", currentPage > 1));
                for (int i = 1; i <= pageCount; i++)
                {
                    pages.Add(new ListItem(i.ToString(), i.ToString(), i != currentPage));
                }
                pages.Add(new ListItem("Last", pageCount.ToString(), currentPage < pageCount));
            }
            rptPager.DataSource = pages;
            rptPager.DataBind();
        }

        protected void Page_Changed(object sender, EventArgs e)
        {
            int pageIndex = int.Parse((sender as LinkButton).CommandArgument);
            this.GetCustomersPageWise(pageIndex);

            //LinkButton lnkPage = (LinkButton)sender;
            //if (lnkPage != null)
            //{
            //    lnkPage.CssClass = "bb";
            //}
        }

        protected void rptPager_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {

            LinkButton my_btn = (LinkButton)e.Item.FindControl("lnkPage");
            if (my_btn != null)
            {
                my_btn.CssClass = "aspNetDisabled";
            }

        }

The Result:

Best Regards,

Sam

MSDN Community Support
Please remember to click "Mark as Answer" the responses that resolved your issue.
If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.

Reply

jzero

Member

728 Points

508 Posts

Re: css class not applying for linkbutton from code behind

Apr 26, 2019 12:01 PM|jzero|LINK

You should make your changes in Repeater.ItemDataBound event.
https://docs.microsoft.com/en-us/dotnet/api/system.web.ui.webcontrols.repeater.itemdatabound?view=netframework-4.8

protected void rptPager_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    LinkButton zLnk = (LinkButton)e.Item.FindControl("lnkPage");
    if (zLnk.Enabled == false)
        zLnk.CssClass = "aspNetDisabled";
}

Reply

nagapavanich

Member

1 Points

37 Posts

Re: css class not applying for linkbutton from code behind

Apr 29, 2019 05:17 AM|nagapavanich|LINK

Thanks for your replays I have tired the same in another default page works as required something is blocking in my page.I need to check mean while I have come up with alternate solution of displaying the current page when ever user clicks on the page no .Thanks once again for your replies

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