我遇到了一个DropDrown SelectedIndexChanged方法的问题,我已经编写了一个Asp.NET DropDown来根据选择的选项填充一个文本框,但是页面需要经过几个过程才能到达DropDown按钮,所以SelectedIndexChanged工作得很好,它填充了我的文本框,但是在填充文本框之后,页面运行PostBack并刷新整个站点,因此,单选按钮和我所做的所有选择都被删除了,所以我需要重新填充它们并再次检查单选按钮,填充其他文本框并从头开始我的表单,此外,页面加载就像我重新开始一样。
HTML
<div class="form-group">
<label for="name" class="text-muted"><small><strong>Código del cliente:</strong></small></label>
<asp:DropDownList AutoPostBack="true" ID="ddClientCode" OnSelectedIndexChanged="ddClientCode_SelectedIndexChanged" runat="server" CssClass="form-control input-sm btn-box-tool"></asp:DropDownList>
</div>
<div class="form-group">
<label for="name" class="text-muted"><small><strong>Persona jurídica:</strong></small></label>
<asp:TextBox ID="TxtLegalPerson1" CssClass="form-control" runat="server" placeholder="Persona jurídica" />
</div>
背后的代码
#region Populate Textboxes Based On Selected Index Client
protected void ddClientCode_SelectedIndexChanged(object sender, EventArgs e)
{
string CLIENTE = ddClientCode.SelectedValue.ToString();
TxtLegalPerson1.Text = BindCedulaJuridica(CLIENTE);
}
#endregion
#region Bind [Cedula Juridica] based on ddClientCode
public string BindCedulaJuridica(string x)
{
string returnValue = string.Empty;
try
{
string constr = ConfigurationManager.ConnectionStrings["wiz"].ConnectionString;
using (IDbConnection connection = new SqlConnection(constr))
{
connection.Open();
using (IDbCommand command = connection.CreateCommand())
{
command.CommandText = "SELECT Column FROM TABLE AS A where Client= '" + x + "'";
using (IDataReader reader = command.ExecuteReader())
{
while (reader.Read())
{
returnValue = reader["Column"].ToString();
}
if (connection.State == ConnectionState.Open)
{
connection.Close();
}
return returnValue;
}
}
}
}
catch (Exception ex)
{
string err = ex.ToString();
}
return returnValue;
}
#endregion
页面加载
protected void Page_Load(object sender, EventArgs e)
{
#region User Validation
string Group = (string)(Session["Group"]);
switch (Group)
{
case "a":
//Response.Redirect("/Dashboard");//This is temporal
break;
case "b":
//Response.Redirect("/Dashboard");
break;
case "c":
Response.Write("<script>alert('¡Lo sentimos, usted no cuenta con privilegios para crear reportes!');</script>");
Response.Redirect("/Dashboard");
break;
case "d"://Check this name with the database
//Response.Redirect("/Dashboard");
break;
default:
break;
}
#endregion
if (!IsPostBack)
{
this.FillTypes();
this.FillStatationsDropDown();
this.FillVehiculeCode();
this.FillddOutAgency();
this.FillddInAgency();
this.FillCustomers();
}
}
有没有办法在不刷新页面的情况下填充我的文本框,也不会丢失我填写的所有信息?
提前谢谢。
https://stackoverflow.com/questions/50659969
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