如果所有行的数据为空隐藏列 [英] If all rows data is null hide column

问题描述

使用微软的Visual Studio 2012中，Telerik的，C＃.ASP.NET。

Using MS Visual Studio 2012, Telerik, C#.ASP.NET.

我需要的逻辑如下：

If a columns data on all rows is null then hide the column

基本上，如果列3行数据，如果所有null，则不要打扰显示此列，但是如果在他们的值为1，则表明该列。

Basically if a column has 3 rows of data, if there all null then dont bother displaying that column, however if there is a value in 1 of them, then show the column.

被玩弄：

foreach (GridColumn columns in dgvUserResults.Columns)
{
    if (columns != null)
    {
        columns.Visible = false;
    }
    else
    {
        columns.Visible = true;
    }
}

code不会通过foreach循环过程中犯规迭代的工作只是跳过它。虽然不在意，即使它没有遍历我需要一种方法来检查是否所有列[名]行是空的。有一个漂亮的Telerik的单行？

code doesn't work of course doesnt iterate through the foreach loop just skips it. Although not bothered about that even if it did iterate through I need a way to check if all column[name] rows are null. There a nice Telerik one liner?

推荐答案

请与尝试以下code片段。

Please try with below code snippet.

使用UniqueName

Using UniqueName

protected void RadGrid1_PreRender(object sender, EventArgs e)
{
    foreach (GridColumn column in RadGrid1.MasterTableView.Columns)
    {
        // If you used ClientSelectColumn then below code is not worked For that you have to put condition
        //if(column.ColumnType  == "GridBoundColumn")

        int TotalNullRecords = (from item in RadGrid1.MasterTableView.Items.Cast<GridDataItem>()
                                where string.IsNullOrWhiteSpace(item[column.UniqueName].Text) ||
                                item[column.UniqueName].Text == "&nbsp;"
                                select item).ToList().Count;

        if (TotalNullRecords == RadGrid1.MasterTableView.Items.Count)
        {
            RadGrid1.MasterTableView.Columns.FindByUniqueName(column.UniqueName).Visible = false;
        }
    }
}

使用指数

protected void RadGrid1_PreRender(object sender, EventArgs e)
{


    foreach (GridColumn column in RadGrid1.MasterTableView.Columns)
    {
        // If you used ClientSelectColumn then below code is not worked For that you have to put condition
        //if(column.ColumnType  == "GridBoundColumn")

        int TotalNullRecords = (from item in RadGrid1.MasterTableView.Items.Cast<GridDataItem>()
                                where string.IsNullOrWhiteSpace(item[column.UniqueName].Text) ||
                                item[column.UniqueName].Text == "&nbsp;"
                                select item).ToList().Count;

        if (TotalNullRecords == RadGrid1.MasterTableView.Items.Count)
        {
            column.Visible = false;
        }


    }
}

这篇关于如果所有行的数据为空隐藏列的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！