remove row from temporary gridview

Question

I have a gridview which stores temporary data. but I want to remove row by auto generated delete button. SO how to do it plz suggest me some solutions.

korskor . · Answer

shibasankar You have the final code for this problem. Please upload the same if you have. Thanks

shibasankar behera · Answer

protected void DeleteInformation(object sender EventArgs e) { object temp = sender; DataTable dt = GridViewItemlist.DataSource as DataTable; LinkButton lnkRemove = (LinkButton)sender; string id = lnkRemove.CommandArgument; for (int i = dt.Rows.Count - 1; i >= 0; i--) { DataRow dr = dt.Rows[i]; if (dr[Item_ID] == id) dr.Delete(); } GridViewItemlist.DataSource = dt; GridViewItemlist.DataBind(); } if (dr[Item_ID] == id) this line m getting error showing possible unintended reference comparision;to get a value comparision cast the left hand side to type string

Iftikar Hussain · Answer

this is the solution you need to tell me what value you are getting for temp and also add EnableViewState=true at page directive EnableViewState=true Inherits=WebApplication1.WebForm1 %>

shibasankar behera · Answer

Still that error is coming. give me some other solutions.

Iftikar Hussain · Answer

put the break point in below line and check what is returing protected void DeleteInformation(object sender EventArgs e) { object temp=sender; DataTable dt= GridViewItemlist.DataSource as DataTable; LinkButton lnkRemove = (LinkButton) sender; string id=lnkRemove.CommandArgument; for(int i = dt.Rows.Count-1; i >= 0; i--) { DataRow dr = dt.Rows[i]; if (dr[Item_ID] == id) dr.Delete(); } GridViewItemlist.DataSource = dt; GridViewItemlist.DataBind(); }

shibasankar behera · Answer

Sorry to say the same error is coming...

Iftikar Hussain · Answer

modify your child gridview for deleting records as like below CommandArgument=' ' OnClientClick=javascript:return DeleteConfirm(this.href); OnClick=DeleteInformation />

shibasankar behera · Answer

Font-Size=11pt Style=width: 500px; height: 200px; RowStyle-CssClass=Row AlternatingRowStyle-CssClass=AltRow> CssClass=GVFixedHeader /> This is my parent grid view which is coming in a popup. here is my child grid view below Font-Size=11pt AlternatingRowStyle-BackColor=#C2D69B HeaderStyle-BackColor=blue EmptyDataText=No Records Selected Style=width: 263px; RowStyle-CssClass=Row AlternatingRowStyle-CssClass=AltRow>

Iftikar Hussain · Answer

share me your gridview code (aspx)

shibasankar behera · Answer

Actually this is a big program You plz simply tell how to remove temporary data... I am getting the data from GridViewItemSrch(gridview) by checkbox and setting to new gridview(GridViewItemlist).

Iftikar Hussain · Answer

can you share your complete code? Regards Iftikar

shibasankar behera · Answer

error is coming--- Object reference not set to an instance of an object. Line 220: LinkButton lnkRemove = (LinkButton)sender; Line 221: string id = lnkRemove.CommandArgument; Line 222: for (int i = dt.Rows.Count - 1; i >= 0; i--) Line 223: { Line 224: DataRow dr = dt.Rows[i];

Iftikar Hussain · Answer

try like this CommandArgument=' ' OnClientClick=javascript:return DeleteConfirm(this.href); OnClick=DeleteInformation /> function DeleteConfirm(href) { var id = href.substring(href.indexOf('__doPostBack') + 14); id = id.substring(0 id.indexOf(')); var r=confirm('Are you sure to delete?'); if (r) { window.__doPostBack(id ''); return true; } return false; } in your code protected void DeleteInformation(object sender EventArgs e) { DataTable dt= GridViewItemlist.DataSource as DataTable; LinkButton lnkRemove = (LinkButton) sender; string id=lnkRemove.CommandArgument; for(int i = dt.Rows.Count-1; i >= 0; i--) { DataRow dr = dt.Rows[i]; if (dr[Item_ID] == id) dr.Delete(); } GridViewItemlist.DataSource = dt; GridViewItemlist.DataBind(); } Regards Iftikar

shibasankar behera · Answer

protected void GetSelectedItems(object sender EventArgs e) { DataTable dt = new DataTable(); dt.Columns.AddRange(new DataColumn[3] { new DataColumn(Item_ID) new DataColumn(Item_Name) new DataColumn(Item_Desc) }); foreach (GridViewRow row in GridViewItemSrch.Rows) { if (row.RowType == DataControlRowType.DataRow) { CheckBox chkItm = (row.Cells[0].FindControl(chkItm) as CheckBox); if (chkItm.Checked) { string Item_ID = row.Cells[1].Text; string Item_Name = row.Cells[2].Text; string Item_Desc = row.Cells[3].Text; dt.Rows.Add(Item_ID Item_Name Item_Desc); } } } GridViewItemlist.DataSource = dt; GridViewItemlist.DataBind(); } i am storing the data from another gridview to this gridview. And my gridview aspx page is--

Iftikar Hussain · Answer

Hi Please provide the code for binding your gridview. Regards Iftikar