UltraWebGrid单元格横向跨列

var row = GridEvaluationGrade.Rows[GridEvaluationGrade.Rows.Count - 1];

row.Cells[0].ColSpan = 3;

row.Cells[1].ColSpan = 0;

row.Cells[2].ColSpan = 0;

row.Cells[0].Text = "总分";

row.Cells[0].Style.HorizontalAlign = HorizontalAlign.Center;

GridEvaluationGrade.Columns[5].HTMLEncodeContent = false;

row.Cells[5].Value = "<button onclick='alert(/"x/");'>TEST</button>";