C# 中继器表中的下载选项_C#_Asp.net

C# 中继器表中的下载选项

c# asp.net

C# 中继器表中的下载选项,c#,asp.net,C#,Asp.net,当用户上载任何文档时，则此文档进行审批当此文档审批时，则用户可以下载以下载其他vise not 这是我想要做的 doc id doc name file uplaoded uploaded date department status download 1 analysis abc.docx 12-12-2013 finance approve download 2 report fm

当用户上载任何文档时，则此文档进行审批当此文档审批时，则用户可以下载以下载其他vise not

这是我想要做的

           doc id doc name file uplaoded uploaded date department       status 
   download       1    analysis  abc.docx    12-12-2013   finance        approve
   download      2    report fm  fm.docx    14-06-2013   finance         reject
  download      3    report ibf  ibf.docx    14-06-2013   finance         approve
   download      4    report ma  ma.docx    14-06-2013   finance         reject

这就是我想要的

            doc id doc name file uplaoded uploaded date department       status 
   download       1    analysis  abc.docx    12-12-2013   finance        approve
                 2    report fm  fm.docx    14-06-2013   finance         reject
  download       3    report ibf  ibf.docx    14-06-2013   finance         approve
                 4    report ma  ma.docx    14-06-2013   finance         reject

现在在拒绝行中，我不想显示下载选项，因为这是被拒绝的文档这里是下载代码

  protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
    {
        if (e.CommandName == "download")
        {
            string filename = e.CommandArgument.ToString();
            string path = MapPath("~/Docfiles/" + filename);
            byte[] bts = System.IO.File.ReadAllBytes(path);
            Response.Clear();
            Response.ClearHeaders();
            Response.AddHeader("Content-Type", "Application/octet-stream");
            Response.AddHeader("Content-Length", bts.Length.ToString());
            Response.AddHeader("Content-Disposition", "attachment; filename=" + 
            filename);
            Response.BinaryWrite(bts);
            Response.Flush();
            Response.End();
        }


    }

html


文件ID
文件名
上传的文件
上载日期
文件类型
部门类型
名称核准
下载

我是如何做到这一点的？

由于您绑定到一个数据源，并且中继器的标记中没有用于要检查的文本的服务器控件，因此您需要在

ItemDataBound

事件中使用

DataRowView

对象，如下所示：

DataRowView theDataRowView = e.Item.DataItem as DataRowView;

theDataRowView.Row["Status"] == "some value"

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    // Only look in data rows, ignore header and footer rows
    if (e.Item.ItemType == ListItemType.AlternatingItem || 
        e.Item.ItemType == ListItemType.Item)
    {
        // Get a data view row object so we can reference the data 
        // in the repeater by the bound field names      
        DataRowView theDataRowView = e.Item.DataItem as DataRowView;

        // Make sure we got the data row view before we try to use it
        if(theDataRowView != null)
        {
            // Get the value of status from the control that holds the value
            string theStatus = theDataRowView.Row["Status"];

            // Find the download link control
            LinkButton theLinkButtonDownload = e.Item.FindControl("LinkButton1") as LinkButton;

            if(theStatus.ToLower() == "approve")
            {
                if(theLinkButtonDownload != null)
                {
                    theLinkButtonDownload.Visible = true;
                }
            }
            else
            {
                if(theLinkButtonDownload != null)
                {
                    theLinkButtonDownload.Visible = false;
                }
            }
        }
    }
}

现在，您可以通过标记中使用的绑定值引用数据，如下所示：

DataRowView theDataRowView = e.Item.DataItem as DataRowView;

theDataRowView.Row["Status"] == "some value"

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    // Only look in data rows, ignore header and footer rows
    if (e.Item.ItemType == ListItemType.AlternatingItem || 
        e.Item.ItemType == ListItemType.Item)
    {
        // Get a data view row object so we can reference the data 
        // in the repeater by the bound field names      
        DataRowView theDataRowView = e.Item.DataItem as DataRowView;

        // Make sure we got the data row view before we try to use it
        if(theDataRowView != null)
        {
            // Get the value of status from the control that holds the value
            string theStatus = theDataRowView.Row["Status"];

            // Find the download link control
            LinkButton theLinkButtonDownload = e.Item.FindControl("LinkButton1") as LinkButton;

            if(theStatus.ToLower() == "approve")
            {
                if(theLinkButtonDownload != null)
                {
                    theLinkButtonDownload.Visible = true;
                }
            }
            else
            {
                if(theLinkButtonDownload != null)
                {
                    theLinkButtonDownload.Visible = false;
                }
            }
        }
    }
}

因此，您的

ItemDataBound

事件现在应该如下所示：

DataRowView theDataRowView = e.Item.DataItem as DataRowView;

theDataRowView.Row["Status"] == "some value"

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    // Only look in data rows, ignore header and footer rows
    if (e.Item.ItemType == ListItemType.AlternatingItem || 
        e.Item.ItemType == ListItemType.Item)
    {
        // Get a data view row object so we can reference the data 
        // in the repeater by the bound field names      
        DataRowView theDataRowView = e.Item.DataItem as DataRowView;

        // Make sure we got the data row view before we try to use it
        if(theDataRowView != null)
        {
            // Get the value of status from the control that holds the value
            string theStatus = theDataRowView.Row["Status"];

            // Find the download link control
            LinkButton theLinkButtonDownload = e.Item.FindControl("LinkButton1") as LinkButton;

            if(theStatus.ToLower() == "approve")
            {
                if(theLinkButtonDownload != null)
                {
                    theLinkButtonDownload.Visible = true;
                }
            }
            else
            {
                if(theLinkButtonDownload != null)
                {
                    theLinkButtonDownload.Visible = false;
                }
            }
        }
    }
}

由于您要绑定到数据源，并且中继器的标记中没有用于要检查的文本的服务器控件，因此需要在

ItemDataBound

事件中使用

DataRowView

对象，如下所示：

DataRowView theDataRowView = e.Item.DataItem as DataRowView;

theDataRowView.Row["Status"] == "some value"

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    // Only look in data rows, ignore header and footer rows
    if (e.Item.ItemType == ListItemType.AlternatingItem || 
        e.Item.ItemType == ListItemType.Item)
    {
        // Get a data view row object so we can reference the data 
        // in the repeater by the bound field names      
        DataRowView theDataRowView = e.Item.DataItem as DataRowView;

        // Make sure we got the data row view before we try to use it
        if(theDataRowView != null)
        {
            // Get the value of status from the control that holds the value
            string theStatus = theDataRowView.Row["Status"];

            // Find the download link control
            LinkButton theLinkButtonDownload = e.Item.FindControl("LinkButton1") as LinkButton;

            if(theStatus.ToLower() == "approve")
            {
                if(theLinkButtonDownload != null)
                {
                    theLinkButtonDownload.Visible = true;
                }
            }
            else
            {
                if(theLinkButtonDownload != null)
                {
                    theLinkButtonDownload.Visible = false;
                }
            }
        }
    }
}

现在，您可以通过标记中使用的绑定值引用数据，如下所示：

DataRowView theDataRowView = e.Item.DataItem as DataRowView;

theDataRowView.Row["Status"] == "some value"

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    // Only look in data rows, ignore header and footer rows
    if (e.Item.ItemType == ListItemType.AlternatingItem || 
        e.Item.ItemType == ListItemType.Item)
    {
        // Get a data view row object so we can reference the data 
        // in the repeater by the bound field names      
        DataRowView theDataRowView = e.Item.DataItem as DataRowView;

        // Make sure we got the data row view before we try to use it
        if(theDataRowView != null)
        {
            // Get the value of status from the control that holds the value
            string theStatus = theDataRowView.Row["Status"];

            // Find the download link control
            LinkButton theLinkButtonDownload = e.Item.FindControl("LinkButton1") as LinkButton;

            if(theStatus.ToLower() == "approve")
            {
                if(theLinkButtonDownload != null)
                {
                    theLinkButtonDownload.Visible = true;
                }
            }
            else
            {
                if(theLinkButtonDownload != null)
                {
                    theLinkButtonDownload.Visible = false;
                }
            }
        }
    }
}

因此，您的

ItemDataBound

事件现在应该如下所示：

DataRowView theDataRowView = e.Item.DataItem as DataRowView;

theDataRowView.Row["Status"] == "some value"

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    // Only look in data rows, ignore header and footer rows
    if (e.Item.ItemType == ListItemType.AlternatingItem || 
        e.Item.ItemType == ListItemType.Item)
    {
        // Get a data view row object so we can reference the data 
        // in the repeater by the bound field names      
        DataRowView theDataRowView = e.Item.DataItem as DataRowView;

        // Make sure we got the data row view before we try to use it
        if(theDataRowView != null)
        {
            // Get the value of status from the control that holds the value
            string theStatus = theDataRowView.Row["Status"];

            // Find the download link control
            LinkButton theLinkButtonDownload = e.Item.FindControl("LinkButton1") as LinkButton;

            if(theStatus.ToLower() == "approve")
            {
                if(theLinkButtonDownload != null)
                {
                    theLinkButtonDownload.Visible = true;
                }
            }
            else
            {
                if(theLinkButtonDownload != null)
                {
                    theLinkButtonDownload.Visible = false;
                }
            }
        }
    }
}

这段代码是我在html或以上repeater1_itemdatabound中添加if（theDataRowView.Row[“Status”]=“Status”）{}的代码，我在html或以上repeater1_itemdatabound中添加if（theDataRowView.Row[“Status”]=“Status”）{}的代码databound@user2931015-我已经更新了答案，我通常是说如何使用

DataRowView.Row

对象。我在回答中发布的代码使用以下

if（theStatus.ToLower（）=“approve”）

，其中

theStatus

是从

DataRowView

对象中检索的，如下所示：

string theStatus=theDataRowView.Row[“Status”]。很抱歉造成混淆。这段代码是我在html或以上repeater1_itemdatabound中添加if（theDataRowView.Row[“Status”]=“Status”）{}的代码，我在html或以上repeater1_itemdatabound中添加if（theDataRowView.Row[“Status”]=“Status”）{}的代码databound@user2931015-我已经更新了答案，我通常是说如何使用DataRowView.Row
对象。我在回答中发布的代码使用以下if（theStatus.ToLower（）=“approve”）
，其中theStatus
是从DataRowView
对象中检索的，如下所示：string theStatus=theDataRowView.Row[“Status”]。很抱歉给你带来了困惑。