如何突出显示下拉列表中的所选项目 [英] How to highlight selected item in dropdown list

问题描述

你好朋友，
我已将组添加到下拉列表中，但工作正常，但是当我单击gridview中的edit选项时，该组的当前值必须保留在下拉列表中，因为该当前值必须在下拉列表中突出显示. br/> 预先感谢您

hello friends,
I have added groups to an dropdown list it is working fine but when I click on edit option which is in gridview then the present value of the group must be retain in the dropdown list that is the persent value must be highlighted in dropdown list.
Thanking you in advance

推荐答案

您是否要说单击网格中的编辑"按钮后下拉列表中的选定值已更改?

如果是这种情况，那么您必须重新分配下拉菜单的选定值，以在回发后显示选定的值.

如果没有，请提供您要实现的目标示例代码.

Are you trying to say that Drop down selected value is changed after clicking edit button in grid ?

if this is the case then you have to reassign the selected value of dropdown to present selected value after postback.

if not then please provide sample code of what are you trying to achieve..

找到ListItem并突出显示BackColor或选择该项

Find the ListItem and highlight the BackColor or select the item

protected void button1_Click(object sender, EventArgs e){    
//Find element by Text or value    
ListItem lstItem = DropDownList1.Items.FindByText(TextBox1.Text);    
if (lstItem != null)    
  {        
   lstItem.Attributes.Add("style", "background-color:Red;");        
   //You can also select the item        
   //lstItem.Selected = true;    
  }
}

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