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POUnable to retain value of a label during post back(button click) in sharepoint
 

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  1. POUnable to retain value of a label during post back(button click) in sharepoint
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    <p>While writing code for connecting two webparts,I created a two labels. the text value for both the labels were written in OnPreRender method. However, i forgot to add control for one label in CreateChildControl method. So while debugging, i noticed that, after post back, the <strong>label whose control i forgot to add</strong> didn't retain the value and it <strong>was showing empty string</strong>.But the other <strong>label who's control i added was able to retain the value</strong>. </p> <pre><code>protected override void CreateChildControls() { base.CreateChildControls(); btnup.Text = " Update"; this.Controls.Add(lblid);//**If i add this, the label retains the value during post back , otherwise its null** this.Controls.Add(lblname); this.Controls.Add(lbldesig); this.Controls.Add(tbdes); this.Controls.Add(lblcomp); this.Controls.Add(tbcomp); this.Controls.Add(btnup); btnup.Click += new EventHandler(btnup_Click); } protected override void OnPreRender(EventArgs e) { base.OnPreRender(e); if (connectionInterface != null) { id = connectionInterface.parameter1; SPWeb mysite = SPContext.Current.Web; SPList mylist = mysite.Lists["UpdateList"]; SPListItemCollection itemcol = mylist.Items; foreach (SPListItem itm in itemcol) { string nm = itm["Company_Id"].ToString(); if (nm.Equals(id)) { lblid.Text = itm["Company_Id"].ToString(); lblname.Text = itm["Name"].ToString(); l } } } else { lblname.Text = "nothing is recieved!"; } } </code></pre> <p>Why is it behaving like this?</p>
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    1. This table or related slice is empty.
    1. PTQuestion
    1. USThomas Mathew
    1. USThomas Mathew
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. COPlease add some sample code.
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      1. POUnable to retain value of a label during post back(button click) in sharepoint
      1. USGaurav Shah
 

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