asp.net - 合并网格视图中在 asp.net 中具有相同值的单元格

Question

我在gridview中有以下格式的数据

Region Branch
Gujrat Ahmedabad
Gujrat Surat
Gujrat Vadodara
Mumbai Dadar
Mumbai Andheri
Mumbai Borivali

但我想合并重复的值，如下所示

Region Branch
Gujrat Ahmedabad
       Surat
       Vadodara
Mumbai Dadar
       Andheri
       Borivali

我正在从一张表中获取数据GridView。在 GridView 我有TemplateField数据绑定的标签。

Answer 1

您可以使用RowDataBound设置标签的文本并检查它是否与以前的相同：

protected void Grid_RowDataBound(Object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow && e.Row.RowIndex > 0)
    {
        GridView grid = (GridView)sender;
        var rowView = (DataRowView)e.Row.DataItem;
        int lastRowIndex = e.Row.RowIndex - 1;
        var lastRowView = (DataRowView)grid.Rows[lastRowIndex].DataItem;
        // replace Region with the correct column name 
        String region = rowView.Row.Field<String>("Region");
        String lastRegion = lastRowView.Row.Field<String>("Region");
        // replace LblRegion with the correct ID of your Label
        Label label = (Label)e.Row.FindControl("LblRegion");
        label.Text = region != lastRegion ? region : "";
    }
}