How to set headers dynamically in griview

in .aspx page

  
       

Use Css For that

try this one

/* For Dynamic Gridview */
.gridviewdynamic
{
    background: rgb(255,255,136); /* Old browsers */
    background: -moz-linear-gradient(top,  rgba(255,255,136,1) 0%, rgba(255,255,136,1) 100%); /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(255,255,136,1)), color-stop(100%,rgba(255,255,136,1))); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top,  rgba(255,255,136,1) 0%,rgba(255,255,136,1) 100%); /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top,  rgba(255,255,136,1) 0%,rgba(255,255,136,1) 100%); /* Opera 11.10+ */
    background: -ms-linear-gradient(top,  rgba(255,255,136,1) 0%,rgba(255,255,136,1) 100%); /* IE10+ */
    background: linear-gradient(to bottom,  rgba(255,255,136,1) 0%,rgba(255,255,136,1) 100%); /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffff88', endColorstr='#ffff88',GradientType=0 ); /* IE6-9 */
}


.gridheadertemplate
{
    /*Blue Gradient*/
    background: rgb(147,206,222); /* Old browsers */
    background: -moz-linear-gradient(top,  rgba(147,206,222,1) 0%, rgba(117,189,209,1) 41%, rgba(73,165,191,1) 100%); /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(147,206,222,1)), color-stop(41%,rgba(117,189,209,1)), color-stop(100%,rgba(73,165,191,1))); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top,  rgba(147,206,222,1) 0%,rgba(117,189,209,1) 41%,rgba(73,165,191,1) 100%); /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top,  rgba(147,206,222,1) 0%,rgba(117,189,209,1) 41%,rgba(73,165,191,1) 100%); /* Opera 11.10+ */
    background: -ms-linear-gradient(top,  rgba(147,206,222,1) 0%,rgba(117,189,209,1) 41%,rgba(73,165,191,1) 100%); /* IE10+ */
    background: linear-gradient(to bottom,  rgba(147,206,222,1) 0%,rgba(117,189,209,1) 41%,rgba(73,165,191,1) 100%); /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#93cede', endColorstr='#49a5bf',GradientType=0 ); /* IE6-9 */
    height: 25px;
}


.gridcelltemplate
{
    background: rgb(255,214,94); /* Old browsers */
    background: -moz-linear-gradient(top,  rgba(255,214,94,1) 0%, rgba(254,191,4,1) 100%); /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(255,214,94,1)), color-stop(100%,rgba(254,191,4,1))); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top,  rgba(255,214,94,1) 0%,rgba(254,191,4,1) 100%); /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top,  rgba(255,214,94,1) 0%,rgba(254,191,4,1) 100%); /* Opera 11.10+ */
    background: -ms-linear-gradient(top,  rgba(255,214,94,1) 0%,rgba(254,191,4,1) 100%); /* IE10+ */
    background: linear-gradient(to bottom,  rgba(255,214,94,1) 0%,rgba(254,191,4,1) 100%); /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffd65e', endColorstr='#febf04',GradientType=0 ); /* IE6-9 */
}

.gridCaption
{
    background: rgb(205,235,139); /* Old browsers */
    background: -moz-linear-gradient(top,  rgba(205,235,139,1) 0%, rgba(205,235,139,1) 100%); /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(205,235,139,1)), color-stop(100%,rgba(205,235,139,1))); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top,  rgba(205,235,139,1) 0%,rgba(205,235,139,1) 100%); /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top,  rgba(205,235,139,1) 0%,rgba(205,235,139,1) 100%); /* Opera 11.10+ */
    background: -ms-linear-gradient(top,  rgba(205,235,139,1) 0%,rgba(205,235,139,1) 100%); /* IE10+ */
    background: linear-gradient(to bottom,  rgba(205,235,139,1) 0%,rgba(205,235,139,1) 100%); /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#cdeb8b', endColorstr='#cdeb8b',GradientType=0 ); /* IE6-9 */
}
/* for Calendar*/

Refer to this link

http://www.dotnetfunda.com/articles/article1400-how-to-generate-gridview-columns-dynamically-based-on-user-selection.aspx

Hi,
        Please refer the below link

http://www.nullskull.com/q/10400486/binding-gridview-with-dynamic-columns.aspx


Regards,
Iftikar