Gridview应用技巧收集

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在某些情况下,DataGrid或者GridView的默认样式并不能满足日益高涨的用户的要求,很多人追求美观的样式。对表头设定背景也是其中的一个方面,那么有什么好的方法可以达到这一要求呢,我的方法如下:
DataGrid:

private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
   
if(e.Item.ItemType == System.Web.UI.WebControls.ListItemType.Header)
    {
        e.Item.Attributes.Add(
"style", "background-image:url('background.gif')");
    }
}
GridView:

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
   
if (e.Row.RowType == DataControlRowType.Header)
    {
        e.Row.Attributes.Add(
"style", "background-image:url('background.gif')");
    }
}

在DataGrid和GridView中对表头设定背景图片,不需要后台代码。 

HTML code
<asp:GridViewrunat="server" ID="gvStatList" AllowPaging="false" Width="100%" CssClass="grid"
                AutoGenerateColumns
="false" Visible="true" ShowFooter="false">
               
<HeaderStyleCssClass="grid-head" />
</asp:GridView>
CSS code
.grid-head { font-size: 14px; font-weight: normal; color: #FFFFFF; background-image: url(../images/grid-bg.gif); text-align:center; vertical-align:middle; height: 28px;}
假设这样一种模型,显示用GridView,数据源用DataSet。每次获取10条信息,按每页10条分页。
有的时候数据可能不足10条,而客户要求不足10条显示为空行,以下代码解决了这个问题。

private DataTable FillBlank(int pageSize, DataTable dt)if (dt.Rows.Count < pageSize) { for (int i = dt.Rows.Count - 1; i < pageSize; i++) { DataRow dr = dt.NewRow(); dt.Rows.Add(dr); } } return dt; }private void BindGrid(DataTable dt){ GridView.DataSource = dt; GridView.DataBind();}
让GridView产生纵向横向的滚动条。这样就不会吧页面撑打了。
CSS code
 <style type="text/css"  id="print" media="print">        #leftSide, #footerSide {            display:none;        }    </style>    <style type="text/css" > .Freezing    {        position:relative ;    table-layout:fixed;   top:expression(this.offsetParent.scrollTop);      z-index: 10;   } .Freezing th{text-overflow:ellipsis;overflow:hidden;white-space: nowrap;padding:2px;}    </style>
HTML code
<div id="Div1" style="overflow: scroll; height: 140px;width:638px" >Gridview 在这里</div>
让GridView响应单击,双击事件的简单方法:
添加选择命令字段,并设置为不可见!
如DataView   ID   为   DataView1.然后在RowDataBound事件中,加上:
C# code 单击
if (e.Row.RowType == DataControlRowType.DataRow) { e.Row.Attributes.Add("onclick", "__doPostBack('GridView1','Select$" + e.Row.RowIndex + "');"); }
双击
if (e.Row.RowType == DataControlRowType.DataRow) { e.Row.Attributes.Add("ondbclick", "__doPostBack('GridView1','Select$" + e.Row.RowIndex + "');"); }
合并gridview列(模板列)相同单元格    /// <summary>    /// 合并gridview列(模板列)相同单元格    /// </summary>    /// <param name="GridViewList"></param>    /// <param name="cellNum">合并第几列单元格</param>    //    public static void CombineCell(GridView GridViewList, int cellNum)    {        int i = 0, rowSpanNum = 1;        while (i < GridViewList.Rows.Count - 1)        {            GridViewRow gvr = GridViewList.Rows[i];            for (++i; i < GridViewList.Rows.Count; i++)            {                GridViewRow gvrNext = GridViewList.Rows[i];                Label lblproject1 = gvr.Cells[cellNum].FindControl("lblproject") as Label;                Label lblproject2 = gvrNext.Cells[cellNum].FindControl("lblproject") as Label;                if (lblproject1.Text == lblproject2.Text)                {                    gvrNext.Cells[cellNum].Visible = false;                    rowSpanNum++;                }                else                {                    gvr.Cells[cellNum].RowSpan = rowSpanNum;                    rowSpanNum = 1;                    break;                }                if (i == GridViewList.Rows.Count - 1)                {                    gvr.Cells[cellNum].RowSpan = rowSpanNum;                }            }        }    }    #endregion
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