我需要在GridView的EditItemTemplate中绑定ASP.Net DropDownList控件。 我有一个带有commandname =“Edit”的编辑图像按钮,下拉列表需要从不同的表(目录)绑定,而不是通过绑定网格的表(详细信息)。
if (e.Row.RowType == DataControlRowType.DataRow && (e.Row.RowState & DataControlRowState.Edit) == DataControlRowState.Edit && GridView1.EditIndex == e.Row.RowIndex)
{
DropDownList DStatusEdit = (DropDownList)e.Row.FindControl("DStatusEdit");
string query = "select distinct status from directory";
SqlCommand cmd = new SqlCommand(query);
DStatusEdit.DataSource = GetData(cmd);
DStatusEdit.DataTextField = "status";
DStatusEdit.DataValueField = "status"; DStatusEdit.DataBind();
DataStatusEdit.DataBind();
}
页面正在运行但是当我单击编辑图像按钮时,dropdwn显示但是下拉列表中没有数据,它是空的。 我的gridview在更新面板内。 我怎样才能实现这一目标? 我的案例中的dropdownlist是否应该在rowcommand中绑定,但是如何?
答案 0 :(得分:3)
代码:试试这个
protected void gv_RowDataBound(object sender, GridViewEditEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if ((e.Row.RowState & DataControlRowState.Edit) > 0)
{
DropDownList ddList= (DropDownList)e.Row.FindControl("DStatusEdit");
//bind dropdownlist
DataTable dt = con.GetData("select distinct status from directory");
ddList.DataSource = dt;
ddList.DataTextField = "YourCOLName";
ddList.DataValueField = "YourCOLName";
ddList.DataBind();
DataRowView dr = e.Row.DataItem as DataRowView;
//ddList.SelectedItem.Text = dr["YourCOLName"].ToString();
ddList.SelectedValue = dr["YourCOLName"].ToString();
}
}
}
已回答类似问题Binding dropdownlist inside gridview edititemtemplate
查看博客文章:How to bind drop-down list inside gridview edit template
答案 1 :(得分:1)
protected void gv_RowDataBound(object sender, GridViewEditEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if ((e.Row.RowState & DataControlRowState.Edit) > 0)
{
DropDownList DStatusEdit= (DropDownList)e.Row.FindControl("DStatusEdit");
DataTable dt = con.GetData("select distinct status from directory");
DStatusEdit.DataSource = dt;
DStatusEdit.DataTextField = "status";
DStatusEdit.DataValueField = "status";
DStatusEdit.DataBind();
DataRowView dr = e.Row.DataItem as DataRowView;
DStatusEdit.SelectedValue = dr["columnname"].ToString();
}
}
}
}
protected void gv_RowEditing(object sender, GridViewEditEventArgs e)
{
gv.EditIndex = e.NewEditIndex;
gridviewBind();// your gridview binding function
}
答案 2 :(得分:0)
您忘了绑定下拉列表
DStatusEdit.DataBind();
答案 3 :(得分:0)
我认为这很有用
private void bind_gridview_with_dropdownlist()
{
DataSet ds = edtcoursedal.Loaddropdown();
foreach (GridViewRow grdRow in GridView1.Rows)
{
DropDownList bind_dropdownlist = (DropDownList)(GridView1.FooterRow.Cells[3].FindControl("drplmaincourse"));
bind_dropdownlist.DataSource = ds;
bind_dropdownlist.DataTextField = "C_name";
bind_dropdownlist.DataValueField = "MId";
bind_dropdownlist.DataBind();
}
bind_dropdownlist.Items.Insert(0,new ListItem("Select","0"));
}
你能帮我把那个“select”值绑定到gridview.which意味着如果ddl =“select”我必须得到从datatable到gridview的所有值
答案 4 :(得分:0)
protected void GridView2_RowDataBound(object sender,GridViewRowEventArgs e) {
using (SqlConnection con = new SqlConnection(ConnectionString))
{
using (SqlCommand cmd = new SqlCommand("SELECT GatePassNo,PurposeOfVisit FROM VisitorList"))
{
cmd.CommandType = CommandType.Text;
cmd.Connection = con;
con.Open();
DropDownList ddlpurposeofvisit = (DropDownList)e.Row.FindControl("ddlpurposeofvisit");
ddlpurposeofvisit.DataSource = cmd.ExecuteReader();
ddlpurposeofvisit.DataTextField = "PurposeOfVisit";
ddlpurposeofvisit.DataValueField = "GatePassNo";
ddlpurposeofvisit.DataBind();
con.Close();
}
}
}