[英]How to implement click event using button which is declared with LiteralControl in asp.net c#?
[英]How to cast LiteralControl to LinkButton in C#
protected void gvDispMsg_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.Header)
{
GridView hGrid = (GridView)sender;
GridViewRow gvrRow = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Insert);
TableHeaderCell tcCellSub1 = new TableHeaderCell();
tcCellSub1.Controls.Add(lblDDLBlank);
gvrRow.Cells.Add(tcCellSub1);
gvDispMsg.Controls[0].Controls.AddAt(0, gvrRow);
LinkButton btnSort;
System.Web.UI.WebControls.Image image;
//iterate through all the header cells
foreach (TableCell cell in e.Row.Cells)
{
//check if the header cell has any child controls
if (cell.HasControls())
{
//get reference to the button column
btnSort = (LinkButton)cell.Controls[0];
image = new System.Web.UI.WebControls.Image();
if (ViewState["sortExp"] != null)
{
//Do something
}
}
}
}
}
我在btnSort = (LinkButton)cell.Controls[0];
行中收到以下錯誤btnSort = (LinkButton)cell.Controls[0];
:
Unable to cast object of type 'System.Web.UI.LiteralControl' to type 'System.Web.UI.WebControls.LinkButton'.
我該如何解決該錯誤。
我知道這是一個古老的問題,但是如果以后有人在搜索中找到它,這是從網格視圖投射鏈接按鈕的正確方法:
var btnSort = (LinkButton)GridView1.Rows[i].Cells[k].Controls[1];
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