c# - 将第二类添加到 RowDataBound 中的 gridview 行

Question

我希望以编程方式向 GridView 添加一个附加类。我知道我可以使用以下代码执行此操作:

public void RowDataBound(object sender, GridViewRowEventArgs e)
{
    DataRow row = ((DataRowView)e.Row.DataItem).Row;
    if (!row.Field<Boolean>("IsActive"))
    {
        e.Row.Attributes["class"] += "InActive";
    }
}

而且效果很好。添加了“IsActive”类，但是，在交替的行上我最终得到了这个 HTML:

<tr class="gvAlternatingStyle" class="InActive"
    onmouseover="gvMouseOver(this)" 
    onmouseout="gvMouseOut(this)" style="cursor:pointer;">

两个类定义不是我想要的。我宁愿有这样的东西:

<tr class="gvAlternatingStyle InActive"
    onmouseover="gvMouseOver(this)" 
    onmouseout="gvMouseOut(this)" style="cursor:pointer;">

当然，这更有效。

我似乎无法弄清楚在哪里/如何调整此 html。可能在 OnPreRender() 中，但我看不到在哪里。谁能给我指点一下？

Answer 1

您可以自己处理 AlternatingRowStyle-CssClass 并在需要时添加额外的类。当然，您需要将其从 GridView header 中删除。

string AlternatingRowStyleCssClass;

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    //check if the row is a datarow
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        string myClass = string.Empty;

        //get the AlternatingRowStyle-CssClass for reference into a variable and delete from the gridview itself
        if (e.Row.RowIndex == 0)
        {
            AlternatingRowStyleCssClass = GridView1.AlternatingRowStyle.CssClass;
            GridView1.AlternatingRowStyle.CssClass = "";
        }

        //check if the row is alternate, if so set the alternating class
        if (e.Row.RowIndex % 2 == 1)
        {
            myClass = AlternatingRowStyleCssClass;
        }

        //check if you need to add the extra class
        DataRow row = ((DataRowView)e.Row.DataItem).Row;
        if (!row.Field<Boolean>("IsActive"))
        {
            myClass += " Inactive";
        }

        //add all the classes to the row
        e.Row.Attributes["class"] = myClass.Trim();
    }

    //add the class to the gridview again (maybe relevant for postback)
    if (e.Row.RowType == DataControlRowType.Footer)
    {
        GridView1.AlternatingRowStyle.CssClass = AlternatingRowStyleCssClass;
    }
}