Question

I create a new event Handler to handle two different events. One is for saving a new document. The other is for saving an edit.

I added this in my Page_load:

if (Request.QueryString["ExhibitID"] != null)//new
{
    if (!IsPostBack)
    {
        ddlCaseFiles.DataSourceID = "dsCaseFiles";
        ddlCaseFiles.DataTextField = "Display";
        ddlCaseFiles.DataValueField = "FileID";
        rbByFileID.Checked = true;
        rbMyFiles.Checked = false;
        ddlCaseFiles.DataBind();
        editExhibit(int.Parse(Request.QueryString["ExhibitID"]));//new
        exhibitHeader.InnerText = "Edit Exhibit";
    }
    hidSavedExhibitID.Value = Request.QueryString["ExhibitID"];
    saveExhibitBtn.Click += new EventHandler(this.btnUpdateExhibit_Click);
}
else
{
    saveExhibitBtn.Click += new EventHandler(this.saveExhibitBtn_Click);
}

my save method for some reason keeps looping then crashing because the second time it goes through, there is no data since I reset it after the first save. I have no idea why it is running my save method twice.

this is my save method :

 protected void saveExhibitBtn_Click(object sender, EventArgs e)
{
    hidSavedExhibitID.Value = null;
    int newExhibitID = saveExhibit();

    int propertyID = autoCreateProperty(newExhibitID);
    linkExhibitAndProperty(newExhibitID, propertyID);

    SaveInfoIntoSessionVariables();
    ClearFormFields();
}

the “saveExhibit()” method is where I actually access the DB and store everything. It works fine.

Answer 1

Because you re bind your datas in your Page_Load.

You must persist your datas with ViewState, EnableViewState="true"

You bind your datas just one time, in the ! IsPostBack. in order to not erase the selected values

If(! IsPostBack)
{

   //Bind your datas with `DataBind()`
}