Unable to cast object of type 'System.Web.UI.WebControls.HiddenField'

Ramco Ramco

In below line i am getting error

List Result = bALSessionRatingParameter.GetSessionRatingParameter(Convert.ToInt32(hf));

protected void lnkSelect_Click(object sender, EventArgs e)
{
    var repeaterItem = ((Control)sender).NamingContainer;
    HiddenField hf = (HiddenField)repeaterItem.FindControl("hdfId");
    BALSessionRatingParameter bALSessionRatingParameter = new BALSessionRatingParameter();
    List Result = bALSessionRatingParameter.GetSessionRatingParameter(Convert.ToInt32(hf));
    rptRating.DataSource = Result;
    rptRating.DataBind();
}

Thanks

2 Replies

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Uttam Kumar4y ago
Accepted answer
In your code you have missed to select value of the hidden field control. Use the following code
List Result = bALSessionRatingParameter.GetSessionRatingParameter(Convert.ToInt32(hf.Value));
Muhammad Imran Ansari4y ago
You are casting HiddenField into integer which is throwing exception. Use the value of hidden field like:

List Result = bALSessionRatingParameter.GetSessionRatingParameter(Convert.ToInt32(hf.Value));