如何检查gridview中的某个列是否有空行并且能够执行操作 [英] How to check if a certain column in gridview has an empty row and be able to perform an action

问题描述

I have a gridview with columns Action, Sigin Date and Signout date. The "Action Column" is a button field column. For every cell in the Signout date column, i want the button in the same row with the signout date to be enabled. If there is signout date, i want the button to be disabled. How do i do this?

我的尝试：



我已创建数据并将其绑定到我的gridview

What I have tried:

I have created and bound data to my gridview

推荐答案

将 ButtonField 转换为 TemplateField 列，这样你就可以控制其中的控件：

Convert your ButtonField to TemplateField column so you can have a control over the controls within it:

<asp:templatefield>

< br $>


at RowDataBound 事件，您可以切换已启用根据您的要求，按钮的属性。一个简单的例子是：

The at RowDataBound event, you could toggle the Enabled property of the Button based on your requirement. A quick example would be:

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
      if (e.Row.RowState != DataControlRowState.Edit){// check for RowState
              if (e.Row.RowType == DataControlRowType.DataRow){ //check for RowType
    
                     // Get the signout value
                     // Note: You may need to change the index of Cells based on the column order
                     string signoutDateString = e.Row.Cells[0].Text; 

                     if(string.IsNullOrEmpty(signoutDateString)){
                            //assuming your Action Column resides within the 5th column
                            //access the LinkButton from the TemplateField using FindControl method
                            LinkButton lb = (LinkButton)e.Row.Cells[4].FindControl("lnkSignOut"); 
                            if (lb != null){
                                 lb.Enabled = false;
                            }
                      }  
               } 
        }
}

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